Where can I get Toad syntax coloring schemes?

Go to View -> Toad Options. Click Editor -> Behavior. There is a button called Syntax Highlighting. On the Highlighting Tab (opens by default) is a list of styles, clicking on the style will show the options selected for that style...

For example in my setup (which is my install default), Reserved Words are blue, Comments green, Strings Red, etc.

Scroll through and you'll see the options, and you can change as necessary for your needs.

UPDATED ENTIRELY:

1. What's the official name?

   The file extension (.dvtcolortheme) suggests "Color Theme" or "DWT Color Theme" are the official names. Most users on Toad forums seem to use the same terminology.

2. Where are they shared?

   There does not seem to be a dedicated site for sharing color themes. However, there were a couple forums on ToadWorld, and ToadForOracle where folks were talking about swapping these color theme files. I would suggest hopping on the forum and asking if others have files to share or know of any repository sites.

3. Available Color Themes

   * Nocturnal theme on GitHub: https://github.com/grng/Nocturnal-Toad-Color-Scheme

   * A nice dark-background theme: http://toadfororacle.com/thread.jspa?messageID=93203

4. Rolling-your-own

   I know you did not want to create your own, but it looks a lot easier than either of us expected. The .dwtcolortheme settings file is just XML.

   I suggest visiting http://studiostyl.es/ - as it's a large repository of Visual Studio themes. Find a thumbnail you like, take a screen shot, and use a color picker to capture the values. Plop them in your XML settings file and you are ready to go.