By popular demand, we are reposting the user ranks on the myFICO community. One of the latest questions involves the colors of the ranks. They are assigned randomly and have no bearing on anything.
The ranks are listed below in order from the highest achievable rank at the top to the lowest rank for a new member at the bottom:

As text:
Legendary Contributor
Epic Contributor
Mega Contributor
Super Contributor
Senior Contributor
Valued Contributor
Established Contributor
Frequent Contributor
Regular Contributor - Use of custom avatar granted
Contributor
New Contributor
Valued Member
Established Member
Member - Use of images and signature granted
New Member
Valued Visitor
Established Visitor
Visitor
New Visitor