Just for fun. Let's see if there are any great favorites. If you have a reason please share. If you have a cool, fun or special reason (color blindness, civs or units that look good in it, memories of that one girl in 6th grade) please please share.
You can also name color preferences for say aoe1 if you want to, since it has a different list.
I like green because, well, I like green, plus on the minimap it strikes a balance between being visible to me but not overly attention drawing to other players. I dig the look of units with orange highlights as well.
(EDIT: Oh right, polls have colored options. This looks fun and not confusing at all. Unfortunately I can no longer change the poll, or I could match them up.)