Using Pantone/spot colors and TikZ together

Based on the neccessary patches to make spotcolor, xcolor and tikz work together, I wrote a small package xspotcolor which combines and stitches spotcolor and xspotcolor together. At the moment it is sitting on the TEX-SX repository waiting to be tested, but hopefully it can go to CTAN soon.

See this test file:

\documentclass[a4paper]{article}

\usepackage[margin=15mm]{geometry}
\usepackage[pantone,autodefine]{xspotcolor}
\usepackage{tikz}

% Some tints of one color.

\definecolor{PANTONEBlue072PC-10}{spotcolor}{PANTONEBlue072PC,.1}
\definecolor{PANTONEBlue072PC-20}{spotcolor}{PANTONEBlue072PC,.2}
\definecolor{PANTONEBlue072PC-30}{spotcolor}{PANTONEBlue072PC,.3}
\definecolor{PANTONEBlue072PC-40}{spotcolor}{PANTONEBlue072PC,.4}
\definecolor{PANTONEBlue072PC-50}{spotcolor}{PANTONEBlue072PC,.5}
\definecolor{PANTONEBlue072PC-60}{spotcolor}{PANTONEBlue072PC,.6}
\definecolor{PANTONEBlue072PC-70}{spotcolor}{PANTONEBlue072PC,.7}
\definecolor{PANTONEBlue072PC-80}{spotcolor}{PANTONEBlue072PC,.8}
\definecolor{PANTONEBlue072PC-90}{spotcolor}{PANTONEBlue072PC,.9}

\pagestyle{empty}

\begin{document}

% Setup color space.

\SetPageColorSpace{PANTONE}

% Example from Tom Bombadil.

\begin{tikzpicture}
    \foreach \x [count=\c] in {PANTONEBlue072PC-10,PANTONEBlue072PC-20,PANTONEBlue072PC-30,PANTONEBlue072PC-40,PANTONEBlue072PC-50,PANTONEBlue072PC-60,PANTONEBlue072PC-70,PANTONEBlue072PC-80,PANTONEBlue072PC-90,PANTONE100PC, PANTONE101PC,
      PANTONE102PC, PANTONE103PC, PANTONE104PC, PANTONE105PC,
      PANTONE106PC, PANTONE107PC, PANTONE108PC, PANTONE109PC,
      PANTONE110PC, PANTONE111PC, PANTONE112PC, PANTONE113PC,
      PANTONE114PC, PANTONE115PC, PANTONE116PC, PANTONE117PC,
      PANTONE118PC, PANTONE119PC, PANTONE120PC, PANTONE121PC,
      PANTONE122PC, PANTONE123PC, PANTONE124PC, PANTONE125PC,
      PANTONE126PC, PANTONE127PC, PANTONE128PC, PANTONE129PC,
      PANTONE130PC, PANTONE131PC, PANTONE132PC, PANTONE133PC,
      PANTONE134PC, PANTONE135PC, PANTONE136PC, PANTONE137PC,
      PANTONE138PC, PANTONE139PC, PANTONE140PC, PANTONE141PC,
      PANTONE142PC, PANTONE143PC, PANTONE144PC, PANTONE145PC,
      PANTONE146PC, PANTONE147PC, PANTONE148PC, PANTONE149PC,
      PANTONE150PC, PANTONE151PC, PANTONE152PC, PANTONE153PC,
      PANTONE154PC, PANTONE155PC, PANTONE156PC, PANTONE157PC,
      PANTONE158PC, PANTONE159PC, PANTONE160PC, PANTONE161PC,
      PANTONE162PC, PANTONE163PC, PANTONE164PC, PANTONE165PC,
      PANTONE166PC, PANTONE167PC, PANTONE168PC, PANTONE169PC,
      PANTONE170PC, PANTONE171PC, PANTONE172PC, PANTONE173PC,
      PANTONE174PC, PANTONE175PC, PANTONE176PC, PANTONE177PC,
      PANTONE178PC, PANTONE179PC, PANTONE180PC, PANTONE181PC,
      PANTONE182PC, PANTONE183PC, PANTONE184PC, PANTONE185PC,
      PANTONE186PC, PANTONE187PC, PANTONE188PC, PANTONE189PC,
      PANTONE190PC, PANTONE191PC, PANTONE192PC, PANTONE193PC,
      PANTONE194PC, PANTONE195PC, PANTONE196PC, PANTONE197PC,
      PANTONE198PC, PANTONE199PC, PANTONE200PC, PANTONE201PC,
      PANTONE202PC, PANTONE203PC, PANTONE204PC, PANTONE205PC,
      PANTONE206PC, PANTONE207PC, PANTONE208PC, PANTONE209PC,
      PANTONE210PC, PANTONE211PC, PANTONE212PC, PANTONE213PC,
      PANTONE214PC, PANTONE215PC, PANTONE216PC, PANTONE217PC,
      PANTONE218PC, PANTONE219PC, PANTONE220PC, PANTONE221PC,
      PANTONE222PC, PANTONE223PC, PANTONE224PC, PANTONE225PC,
      PANTONE226PC, PANTONE227PC, PANTONE228PC, PANTONE229PC,
      PANTONE230PC, PANTONE231PC, PANTONE232PC, PANTONE233PC,
      PANTONE234PC, PANTONE235PC, PANTONE236PC, PANTONE237PC,
      PANTONE238PC, PANTONE239PC, PANTONE240PC, PANTONE241PC,
      PANTONE242PC, PANTONE243PC, PANTONE244PC, PANTONE245PC,
      PANTONE246PC, PANTONE247PC, PANTONE248PC, PANTONE249PC,
      PANTONE250PC, PANTONE251PC, PANTONE252PC, PANTONE253PC,
      PANTONE254PC, PANTONE255PC, PANTONE256PC, PANTONE257PC,
      PANTONE258PC, PANTONE259PC, PANTONE260PC, PANTONE261PC,
      PANTONE262PC, PANTONE263PC, PANTONE264PC, PANTONE265PC,
      PANTONE266PC, PANTONE267PC, PANTONE268PC, PANTONE269PC,
      PANTONE270PC, PANTONE271PC, PANTONE272PC, PANTONE273PC,
      PANTONE274PC, PANTONE275PC, PANTONE276PC, PANTONE277PC,
      PANTONE278PC, PANTONE279PC, PANTONE280PC, PANTONE281PC,
      PANTONE282PC, PANTONE283PC, PANTONE284PC, PANTONE285PC,
      PANTONE286PC, PANTONE287PC, PANTONE288PC, PANTONE289PC,
      PANTONE290PC, PANTONE291PC, PANTONE292PC, PANTONE293PC,
      PANTONE294PC, PANTONE295PC, PANTONE296PC, PANTONE297PC,
      PANTONE298PC, PANTONE299PC, PANTONE300PC, PANTONE301PC,
      PANTONE302PC, PANTONE303PC, PANTONE304PC, PANTONE305PC,
      PANTONE306PC, PANTONE307PC, PANTONE308PC, PANTONE309PC,
      PANTONE310PC, PANTONE311PC, PANTONE312PC, PANTONE313PC,
      PANTONE314PC, PANTONE315PC, PANTONE316PC, PANTONE317PC,
      PANTONE318PC, PANTONE319PC, PANTONE320PC, PANTONE321PC,
      PANTONE322PC, PANTONE323PC, PANTONE324PC, PANTONE325PC,
      PANTONE326PC, PANTONE327PC, PANTONE328PC, PANTONE329PC,
      PANTONE330PC, PANTONE331PC, PANTONE332PC, PANTONE333PC,
      PANTONE334PC, PANTONE335PC, PANTONE336PC, PANTONE337PC,
      PANTONE338PC, PANTONE339PC, PANTONE340PC, PANTONE341PC,
      PANTONE342PC, PANTONE343PC, PANTONE344PC, PANTONE345PC,
      PANTONE346PC, PANTONE347PC, PANTONE348PC, PANTONE349PC,
      PANTONE350PC, PANTONE351PC, PANTONE352PC, PANTONE353PC,
      PANTONE354PC, PANTONE355PC, PANTONE356PC, PANTONE357PC,
      PANTONE358PC, PANTONE359PC, PANTONE360PC, PANTONE361PC,
      PANTONE362PC, PANTONE363PC, PANTONE364PC, PANTONE365PC,
      PANTONE366PC, PANTONE367PC, PANTONE368PC, PANTONE369PC,
      PANTONE370PC, PANTONE371PC, PANTONE372PC, PANTONE373PC,
      PANTONE374PC, PANTONE375PC, PANTONE376PC, PANTONE377PC,
      PANTONE378PC, PANTONE379PC, PANTONE380PC, PANTONE381PC,
      PANTONE382PC, PANTONE383PC, PANTONE384PC, PANTONE385PC,
      PANTONE386PC, PANTONE387PC, PANTONE388PC, PANTONE389PC,
      PANTONE390PC, PANTONE391PC, PANTONE392PC, PANTONE393PC,
      PANTONE394PC, PANTONE395PC, PANTONE396PC, PANTONE397PC,
      PANTONE398PC, PANTONE399PC, PANTONE400PC, PANTONE401PC,
      PANTONE402PC, PANTONE403PC, PANTONE404PC, PANTONE405PC,
      PANTONE406PC, PANTONE407PC, PANTONE408PC, PANTONE409PC,
      PANTONE410PC, PANTONE411PC, PANTONE412PC, PANTONE413PC,
      PANTONE414PC, PANTONE415PC, PANTONE416PC, PANTONE417PC,
      PANTONE418PC, PANTONE419PC, PANTONE420PC, PANTONE421PC,
      PANTONE422PC, PANTONE423PC, PANTONE424PC, PANTONE425PC,
      PANTONE426PC, PANTONE427PC, PANTONE428PC, PANTONE429PC,
      PANTONE430PC, PANTONE431PC, PANTONE432PC, PANTONE433PC,
      PANTONE434PC, PANTONE435PC, PANTONE436PC, PANTONE437PC,
      PANTONE438PC, PANTONE439PC, PANTONE440PC, PANTONE441PC,
      PANTONE442PC, PANTONE443PC, PANTONE444PC, PANTONE445PC,
      PANTONE446PC, PANTONE447PC, PANTONE448PC, PANTONE449PC,
      PANTONE450PC, PANTONE451PC, PANTONE452PC, PANTONE453PC,
      PANTONE454PC, PANTONE455PC, PANTONE456PC, PANTONE457PC,
      PANTONE458PC, PANTONE459PC, PANTONE460PC, PANTONE461PC,
      PANTONE462PC, PANTONE463PC, PANTONE464PC, PANTONE465PC,
      PANTONE466PC, PANTONE467PC, PANTONE468PC, PANTONE469PC,
      PANTONE470PC, PANTONE471PC, PANTONE472PC, PANTONE473PC,
      PANTONE474PC, PANTONE475PC, PANTONE476PC, PANTONE477PC,
      PANTONE478PC, PANTONE479PC, PANTONE480PC, PANTONE481PC,
      PANTONE482PC, PANTONE483PC, PANTONE484PC, PANTONE485PC,
      PANTONE486PC, PANTONE487PC, PANTONE488PC, PANTONE489PC,
      PANTONE490PC, PANTONE491PC, PANTONE492PC, PANTONE493PC,
      PANTONE494PC, PANTONE495PC, PANTONE496PC, PANTONE497PC,
      PANTONE498PC, PANTONE499PC, PANTONE500PC, PANTONE501PC,
      PANTONE502PC, PANTONE503PC, PANTONE504PC, PANTONE505PC,
      PANTONE506PC, PANTONE507PC, PANTONE508PC, PANTONE509PC,
      PANTONE510PC, PANTONE511PC, PANTONE512PC, PANTONE513PC,
      PANTONE514PC, PANTONE515PC, PANTONE516PC, PANTONE517PC,
      PANTONE518PC, PANTONE519PC, PANTONE520PC, PANTONE521PC,
      PANTONE522PC, PANTONE523PC, PANTONE524PC, PANTONE525PC,
      PANTONE526PC, PANTONE527PC, PANTONE528PC, PANTONE529PC,
      PANTONE530PC, PANTONE531PC, PANTONE532PC, PANTONE533PC,
      PANTONE534PC, PANTONE535PC, PANTONE536PC, PANTONE537PC,
      PANTONE538PC, PANTONE539PC, PANTONE540PC, PANTONE541PC,
      PANTONE542PC, PANTONE543PC, PANTONE544PC, PANTONE545PC,
      PANTONE546PC, PANTONE547PC, PANTONE548PC, PANTONE549PC,
      PANTONE550PC, PANTONE551PC, PANTONE552PC, PANTONE553PC,
      PANTONE554PC, PANTONE555PC, PANTONE556PC, PANTONE557PC,
      PANTONE558PC, PANTONE559PC, PANTONE560PC, PANTONE561PC,
      PANTONE562PC, PANTONE563PC, PANTONE564PC, PANTONE565PC,
      PANTONE566PC, PANTONE567PC, PANTONE568PC, PANTONE569PC,
      PANTONE570PC, PANTONE571PC, PANTONE572PC, PANTONE573PC,
      PANTONE574PC, PANTONE575PC, PANTONE576PC, PANTONE577PC,
      PANTONE578PC, PANTONE579PC, PANTONE580PC, PANTONE581PC,
      PANTONE582PC, PANTONE583PC, PANTONE584PC, PANTONE585PC,
      PANTONE586PC, PANTONE587PC, PANTONE600PC, PANTONE601PC,
      PANTONE602PC, PANTONE603PC, PANTONE604PC, PANTONE605PC,
      PANTONE606PC, PANTONE607PC, PANTONE608PC, PANTONE609PC,
      PANTONE610PC, PANTONE611PC, PANTONE612PC, PANTONE613PC,
      PANTONE614PC, PANTONE615PC, PANTONE616PC, PANTONE617PC,
      PANTONE618PC, PANTONE619PC, PANTONE620PC, PANTONE621PC,
      PANTONE622PC, PANTONE623PC, PANTONE624PC, PANTONE625PC,
      PANTONE626PC, PANTONE627PC, PANTONE628PC, PANTONE629PC,
      PANTONE630PC, PANTONE631PC, PANTONE632PC, PANTONE633PC,
      PANTONE634PC, PANTONE635PC, PANTONE636PC, PANTONE637PC,
      PANTONE638PC, PANTONE639PC, PANTONE640PC, PANTONE641PC,
      PANTONE642PC, PANTONE643PC, PANTONE644PC, PANTONE645PC,
      PANTONE646PC, PANTONE647PC, PANTONE648PC, PANTONE649PC,
      PANTONE650PC, PANTONE651PC, PANTONE652PC, PANTONE653PC,
      PANTONE654PC, PANTONE655PC, PANTONE656PC, PANTONE657PC,
      PANTONE658PC, PANTONE659PC, PANTONE660PC, PANTONE661PC,
      PANTONE662PC, PANTONE663PC, PANTONE664PC, PANTONE665PC,
      PANTONE666PC, PANTONE667PC, PANTONE668PC, PANTONE669PC,
      PANTONE670PC, PANTONE671PC, PANTONE672PC, PANTONE673PC,
      PANTONE674PC, PANTONE675PC, PANTONE676PC, PANTONE677PC,
      PANTONE678PC, PANTONE679PC, PANTONE680PC, PANTONE681PC,
      PANTONE682PC, PANTONE683PC, PANTONE684PC, PANTONE685PC,
      PANTONE686PC, PANTONE687PC, PANTONE688PC, PANTONE689PC,
      PANTONE690PC, PANTONE691PC, PANTONE692PC, PANTONE693PC,
      PANTONE694PC, PANTONE695PC, PANTONE696PC, PANTONE697PC,
      PANTONE698PC, PANTONE699PC, PANTONE700PC, PANTONE701PC,
      PANTONE702PC, PANTONE703PC, PANTONE704PC, PANTONE705PC,
      PANTONE706PC, PANTONE707PC, PANTONE708PC, PANTONE709PC,
      PANTONE710PC, PANTONE711PC, PANTONE712PC, PANTONE713PC,
      PANTONE714PC, PANTONE715PC, PANTONE716PC, PANTONE717PC,
      PANTONE718PC, PANTONE719PC, PANTONE720PC, PANTONE721PC,
      PANTONE722PC, PANTONE723PC, PANTONE724PC, PANTONE725PC,
      PANTONE726PC, PANTONE727PC, PANTONE728PC, PANTONE729PC,
      PANTONE730PC, PANTONE731PC, PANTONE732PC, PANTONE1205PC,
      PANTONE1215PC, PANTONE1225PC, PANTONE1235PC, PANTONE1245PC,
      PANTONE1255PC, PANTONE1265PC, PANTONE1345PC, PANTONE1355PC,
      PANTONE1365PC, PANTONE1375PC, PANTONE1385PC, PANTONE1395PC,
      PANTONE1405PC, PANTONE1485PC, PANTONE1495PC, PANTONE1505PC,
      PANTONE1525PC, PANTONE1535PC, PANTONE1545PC, PANTONE1555PC,
      PANTONE1565PC, PANTONE1575PC, PANTONE1585PC, PANTONE1595PC,
      PANTONE1605PC, PANTONE1615PC, PANTONE1625PC, PANTONE1635PC,
      PANTONE1645PC, PANTONE1655PC, PANTONE1665PC, PANTONE1675PC,
      PANTONE1685PC, PANTONE1765PC, PANTONE1767PC, PANTONE1775PC,
      PANTONE1777PC, PANTONE1785PC, PANTONE1787PC, PANTONE1788PC,
      PANTONE1795PC, PANTONE1797PC, PANTONE1805PC, PANTONE1807PC,
      PANTONE1815PC, PANTONE1817PC, PANTONE1895PC, PANTONE1905PC,
      PANTONE1915PC, PANTONE1925PC, PANTONE1935PC, PANTONE1945PC,
      PANTONE1955PC, PANTONE2365PC, PANTONE2375PC, PANTONE2385PC,
      PANTONE2395PC, PANTONE2405PC, PANTONE2415PC, PANTONE2425PC,
      PANTONE2562PC, PANTONE2563PC, PANTONE2567PC, PANTONE2572PC,
      PANTONE2573PC, PANTONE2577PC, PANTONE2582PC, PANTONE2583PC,
      PANTONE2587PC, PANTONE2592PC, PANTONE2593PC, PANTONE2597PC,
      PANTONE2602PC, PANTONE2603PC, PANTONE2607PC, PANTONE2612PC,
      PANTONE2613PC, PANTONE2617PC, PANTONE2622PC, PANTONE2623PC,
      PANTONE2627PC, PANTONE2635PC, PANTONE2645PC, PANTONE2655PC,
      PANTONE2665PC, PANTONE2685PC, PANTONE2695PC, PANTONE2705PC,
      PANTONE2706PC, PANTONE2707PC, PANTONE2708PC, PANTONE2715PC,
      PANTONE2716PC, PANTONE2717PC, PANTONE2718PC, PANTONE2725PC,
      PANTONE2726PC, PANTONE2727PC, PANTONE2728PC, PANTONE2735PC,
      PANTONE2736PC, PANTONE2738PC, PANTONE2745PC, PANTONE2746PC,
      PANTONE2747PC, PANTONE2748PC, PANTONE2755PC, PANTONE2756PC,
      PANTONE2757PC, PANTONE2758PC, PANTONE2765PC, PANTONE2766PC,
      PANTONE2767PC, PANTONE2768PC, PANTONE2905PC, PANTONE2915PC,
      PANTONE2925PC, PANTONE2935PC, PANTONE2945PC, PANTONE2955PC,
      PANTONE2965PC, PANTONE2975PC, PANTONE2985PC, PANTONE2995PC,
      PANTONE3005PC, PANTONE3015PC, PANTONE3025PC, PANTONE3035PC,
      PANTONE3105PC, PANTONE3115PC, PANTONE3125PC, PANTONE3135PC,
      PANTONE3145PC, PANTONE3155PC, PANTONE3165PC, PANTONE3242PC,
      PANTONE3245PC, PANTONE3248PC, PANTONE3252PC, PANTONE3255PC,
      PANTONE3258PC, PANTONE3262PC, PANTONE3265PC, PANTONE3268PC,
      PANTONE3272PC, PANTONE3275PC, PANTONE3278PC, PANTONE3282PC,
      PANTONE3285PC, PANTONE3288PC, PANTONE3292PC, PANTONE3295PC,
      PANTONE3298PC, PANTONE3302PC, PANTONE3305PC, PANTONE3308PC,
      PANTONE3375PC, PANTONE3385PC, PANTONE3395PC, PANTONE3405PC,
      PANTONE3415PC, PANTONE3425PC, PANTONE3435PC, PANTONE3935PC,
      PANTONE3945PC, PANTONE3955PC, PANTONE3965PC, PANTONE3975PC,
      PANTONE3985PC, PANTONE3995PC, PANTONE4485PC, PANTONE4495PC,
      PANTONE4505PC, PANTONE4515PC, PANTONE4525PC, PANTONE4535PC,
      PANTONE4545PC, PANTONE4625PC, PANTONE4635PC, PANTONE4645PC,
      PANTONE4655PC, PANTONE4665PC, PANTONE4675PC, PANTONE4685PC,
      PANTONE4695PC, PANTONE4705PC, PANTONE4715PC, PANTONE4725PC,
      PANTONE4735PC, PANTONE4745PC, PANTONE4755PC, PANTONE4975PC,
      PANTONE4985PC, PANTONE4995PC, PANTONE5005PC, PANTONE5015PC,
      PANTONE5025PC, PANTONE5035PC, PANTONE5115PC, PANTONE5125PC,
      PANTONE5135PC, PANTONE5145PC, PANTONE5155PC, PANTONE5165PC,
      PANTONE5175PC, PANTONE5185PC, PANTONE5195PC, PANTONE5205PC,
      PANTONE5215PC, PANTONE5225PC, PANTONE5235PC, PANTONE5245PC,
      PANTONE5255PC, PANTONE5265PC, PANTONE5275PC, PANTONE5285PC,
      PANTONE5295PC, PANTONE5305PC, PANTONE5315PC, PANTONE5395PC,
      PANTONE5405PC, PANTONE5415PC, PANTONE5425PC, PANTONE5435PC,
      PANTONE5445PC, PANTONE5455PC, PANTONE5463PC, PANTONE5467PC,
      PANTONE5473PC, PANTONE5477PC, PANTONE5483PC, PANTONE5487PC,
      PANTONE5493PC, PANTONE5497PC, PANTONE5503PC, PANTONE5507PC,
      PANTONE5513PC, PANTONE5517PC, PANTONE5523PC, PANTONE5527PC,
      PANTONE5535PC, PANTONE5545PC, PANTONE5555PC, PANTONE5565PC,
      PANTONE5575PC, PANTONE5585PC, PANTONE5595PC, PANTONE5605PC,
      PANTONE5615PC, PANTONE5625PC, PANTONE5635PC, PANTONE5645PC,
      PANTONE5655PC, PANTONE5665PC, PANTONE5743PC, PANTONE5747PC,
      PANTONE5753PC, PANTONE5757PC, PANTONE5763PC, PANTONE5767PC,
      PANTONE5773PC, PANTONE5777PC, PANTONE5783PC, PANTONE5787PC,
      PANTONE5793PC, PANTONE5797PC, PANTONE5803PC, PANTONE5807PC,
      PANTONE5815PC, PANTONE5825PC, PANTONE5835PC, PANTONE5845PC,
      PANTONE5855PC, PANTONE5865PC, PANTONE5875PC, PANTONE7401PC,
      PANTONE7402PC, PANTONE7403PC, PANTONE7404PC, PANTONE7405PC,
      PANTONE7406PC, PANTONE7407PC, PANTONE7408PC, PANTONE7409PC,
      PANTONE7410PC, PANTONE7411PC, PANTONE7412PC, PANTONE7413PC,
      PANTONE7414PC, PANTONE7415PC, PANTONE7416PC, PANTONE7417PC,
      PANTONE7418PC, PANTONE7419PC, PANTONE7420PC, PANTONE7421PC,
      PANTONE7422PC, PANTONE7423PC, PANTONE7424PC, PANTONE7425PC,
      PANTONE7426PC, PANTONE7427PC, PANTONE7428PC, PANTONE7429PC,
      PANTONE7430PC, PANTONE7431PC, PANTONE7432PC, PANTONE7433PC,
      PANTONE7434PC, PANTONE7435PC, PANTONE7436PC, PANTONE7437PC,
      PANTONE7438PC, PANTONE7439PC, PANTONE7440PC, PANTONE7441PC,
      PANTONE7442PC, PANTONE7443PC, PANTONE7444PC, PANTONE7445PC,
      PANTONE7446PC, PANTONE7447PC, PANTONE7448PC, PANTONE7449PC,
      PANTONE7450PC, PANTONE7451PC, PANTONE7452PC, PANTONE7453PC,
      PANTONE7454PC, PANTONE7455PC, PANTONE7456PC, PANTONE7457PC,
      PANTONE7458PC, PANTONE7459PC, PANTONE7460PC, PANTONE7461PC,
      PANTONE7462PC, PANTONE7463PC, PANTONE7464PC, PANTONE7465PC,
      PANTONE7466PC, PANTONE7467PC, PANTONE7468PC, PANTONE7469PC,
      PANTONE7470PC, PANTONE7471PC, PANTONE7472PC, PANTONE7473PC,
      PANTONE7474PC, PANTONE7475PC, PANTONE7476PC, PANTONE7477PC,
      PANTONE7478PC, PANTONE7479PC, PANTONE7480PC, PANTONE7481PC,
      PANTONE7482PC, PANTONE7483PC, PANTONE7484PC, PANTONE7485PC,
      PANTONE7486PC, PANTONE7487PC, PANTONE7488PC, PANTONE7489PC,
      PANTONE7490PC, PANTONE7491PC, PANTONE7492PC, PANTONE7493PC,
      PANTONE7494PC, PANTONE7495PC, PANTONE7496PC, PANTONE7497PC,
      PANTONE7498PC, PANTONE7499PC, PANTONE7500PC, PANTONE7501PC,
      PANTONE7502PC, PANTONE7503PC, PANTONE7504PC, PANTONE7505PC,
      PANTONE7506PC, PANTONE7507PC, PANTONE7508PC, PANTONE7509PC,
      PANTONE7510PC, PANTONE7511PC, PANTONE7512PC, PANTONE7513PC,
      PANTONE7514PC, PANTONE7515PC, PANTONE7516PC, PANTONE7517PC,
      PANTONE7518PC, PANTONE7519PC, PANTONE7520PC, PANTONE7521PC,
      PANTONE7522PC, PANTONE7523PC, PANTONE7524PC, PANTONE7525PC,
      PANTONE7526PC, PANTONE7527PC, PANTONE7528PC, PANTONE7529PC,
      PANTONE7530PC, PANTONE7531PC, PANTONE7532PC, PANTONE7533PC,
      PANTONE7534PC, PANTONE7535PC, PANTONE7536PC, PANTONE7537PC,
      PANTONE7538PC, PANTONE7539PC, PANTONE7540PC, PANTONE7541PC,
      PANTONE7542PC, PANTONE7543PC, PANTONE7544PC, PANTONE7545PC,
      PANTONE7546PC, PANTONE7547PC, PANTONEBlack2PC, PANTONEBlack3PC,
      PANTONEBlack4PC, PANTONEBlack5PC, PANTONEBlack6PC,
      PANTONEBlack7PC, PANTONEBlackPC, PANTONEBlue072PC,
      PANTONECoolGray1PC, PANTONECoolGray2PC, PANTONECoolGray3PC,
      PANTONECoolGray4PC, PANTONECoolGray5PC, PANTONECoolGray6PC,
      PANTONECoolGray7PC, PANTONECoolGray8PC, PANTONECoolGray9PC,
      PANTONECoolGray10PC, PANTONECoolGray11PC, PANTONEGreenPC,
      PANTONEOrange021PC, PANTONEProc.BlackPC, PANTONEProc.BluePC,
      PANTONEProc.CyanPC, PANTONEProc.Magen.PC, PANTONEProc.YellowPC,
      PANTONEPurplePC, PANTONERed032PC, PANTONERef.BluePC,
      PANTONERhod.RedPC, PANTONERub.RedPC, PANTONEVioletPC,
      PANTONEWarmGray1PC, PANTONEWarmGray2PC, PANTONEWarmGray3PC,
      PANTONEWarmGray4PC, PANTONEWarmGray5PC, PANTONEWarmGray6PC,
      PANTONEWarmGray7PC, PANTONEWarmGray8PC, PANTONEWarmGray9PC,
      PANTONEWarmGray10PC, PANTONEWarmGray11PC, PANTONEWarmRedPC,
      PANTONEYellowPC%
    }
        {   \fill[color=\x] ({mod(\c-1,27)*0.65},{div(\c-1,27)*0.65}) rectangle ++(0.4,0.4);
    }
\end{tikzpicture}

\end{document}

test output

Note: I'm getting complaints from Acrobat Professional when trying to do a color separation from this file, because of "too complex data" or whatever. Well it's reasonable that having more than a handful of spot colors in one document makes no sense.

I tried to just copy some color definitions from spotcolorpantone.tex and reduce the example accordingly, and then color separation went smoothly. So to be safe, you should only define those colors you are actually using in a document.

Here is a (slightly modified) test file provided by user Pygmalion which demonstrates using black together with one spot color:

\documentclass[a4paper]{article}

\usepackage[margin=15mm]{geometry}
\usepackage[autodefine]{xspotcolor}
\usepackage{tikz}

\NewSpotColorSpace{PANTONE}
\AddSpotColor{PANTONE} {PANTONE3035PC} {PANTONE\SpotSpace 3035\SpotSpace PC} {1 0 0.05 0.72}
\definecolor{PANTONE3035PCA}{spotcolor}{PANTONE3035PC,.5}

\definecolor{grey}{gray}{0.5}


\begin{document}

\SetPageColorSpace{PANTONE}


The idea is that the main text is Black, if possible.

I really need only four colors:

\begin{itemize}
\item this text is not Pantone
\item \tikz[>=stealth,baseline=-0.5ex]{\draw[->,very thick,color=PANTONE3035PC] (0,0) -- (-1cm,0);} dark blue
\item \tikz[>=stealth,baseline=-0.5ex]{\draw[->,very thick,color=PANTONE3035PCA] (0,0) -- (-1cm,0);} light blue
\item \tikz[>=stealth,baseline=-0.5ex]{\draw[->,very thick] (0,0) -- (-1cm,0);} default should be black
\item \tikz[>=stealth,baseline=-0.5ex]{\draw[->,very
    thick,color=black] (0,0) -- (-1cm,0);} also black
\item \tikz[>=stealth,baseline=-0.5ex]{\draw[->,very thick,color=grey] (0,0) -- (-1cm,0);} gray
\end{itemize}

\end{document}

With Acrobat Professional, I get a clean color separation:


enter image description here


enter image description here



I've just written a new package for spot colors. It's named colorspace and as its name suggests the goal is to provide tools related to PDF color spaces. Currently you can define spot colors (including tints with the ! notation) as well as mixed inks (up to 4, so shades, ie, a spot color with black, are now possible). For example:

\definespotcolor{bluish}{PANTONE 3035 PC}{1, 0, 0.05, 0.72}

It can also assign ICC profiles to the default CMYK, RGB and Gray spaces. More features are on the way (including support for XeTeX, because it works only with pdftex/luatex), but I would like some feedback.