foreground (the first character) and the background (the second
character) colors of the default face. Each character should be the
hexadecimal code for the desired color on a standard PC text-mode
-display.
+display. For example, to get blue text on a lightgray backgraound,
+specify @samp{EMACSCOLORS=17}, since 1 is the code of the blue color and
+7 is the code of the lightgray color.
The PC display usually supports only eight background colors. However,
Emacs switches the DOS display to a mode where all 16 colors can be used