Here you see all possible C&C players and their colors.

Player          Color units     Color buildings         Color on radar
======          -----------     ---------------         --------------
Goodguy         YELLOW          YELLOW                  YELLOW
Badguy          WHITE/GREY      RED                     RED
Neutral         YELLOW          YELLOW                  GREY
Special         YELLOW          YELLOW                  RED
Multi1          BLUE            BLUE                    BLUE
Multi2          ORANGE          ORANGE                  ORANGE
Multi3          GREEN           GREEN                   GREEN
Multi4          WHITE/GREY      WHITE/GREY              WHITE
Multi5          YELLOW          YELLOW                  YELLOW
Multi6          RED             RED                     RED

Note: In single player missions, all Multiplayer teams (Multi1-Multi6) are
      shown grey on radar.

Written by Maarten 'Nyerguds' Meuris
http://cnc2sw.planetcnc.gamespy.com/