As the title says, the active users' usergroup should be changed to green, and the moderators to Yellow. This is my figuring:
In WoW:
Poor Item Quality = Gray colored (leecher)
Normal Item = White Colored (Normal Member)
Uncommon = Green (active user)
Rare = Blue colored, (Contributor)
Epic = Purple Colored (Elite Member)
Legendary = Legendary (light orange / pink color)
This would be uber amazing.
It would all work out, and since, well... we are a WoW site, and we already have 5/6 of this scheme done, it would pwn!
Thanks,
Hallowsend