elisp: XPM Images

 
 37.17.4 XPM Images
 ------------------
 
 To use XPM format, specify ‘xpm’ as the image type.  The additional
 image property ‘:color-symbols’ is also meaningful with the ‘xpm’ image
 type:
 
 ‘:color-symbols SYMBOLS’
      The value, SYMBOLS, should be an alist whose elements have the form
      ‘(NAME . COLOR)’.  In each element, NAME is the name of a color as
      it appears in the image file, and COLOR specifies the actual color
      to use for displaying that name.