Disabled input text color

-webkit-text-fill-color: #880000;
opacity: 1; /* required on iOS */

Phone and Tablet webkit browsers (Safari and Chrome) and desktop IE have a number of default changes to disabled form elements that you'll need to override if you want to style disabled inputs.

-webkit-text-fill-color:#880000; /* Override iOS / Android font color change */
-webkit-opacity:1; /* Override iOS opacity change affecting text & background color */
color:#880000; /* Override IE font color change */

UPDATED 2019:

Combining ideas from this page into a "set and forget" solution.

input:disabled, textarea:disabled, input:disabled::placeholder, textarea:disabled::placeholder {
  -webkit-text-fill-color: currentcolor; /* 1. sets text fill to current `color` for safari */
  opacity: 1; /* 2. correct opacity on iOS */
}