Alter Aeon Online Help

Keywords are:  'high contrast colorblind'

High contrast mode was designed to assist players with decreased color
vision.  Use the command 'set highcontrast' to toggle it on or off.

High contrast mode does the following:
All faint colors are converted to normal.
Normal blue and highlighted blue are converted to highlighted cyan.
Normal purple and normal red are highlighted.
Normal yellow and normal cyan are converted to normal green.