I hear your suggestion Jake,
however I think it will introduce to much confusion & color since many Usernames (as they appear in the Avatar) already are so modified via color, strike-through, underline, glow etc.
Its OK to be creative and unique in your "Identity" appearance, and that's why I think it should remain in your Avatar.
But the "Chat" field should remain parallel & consistent.
The main objective is to "Recognize" the member submitting a message .... not their "Colorful Flair & Identity"
The "Admin/Com Status" & "Sponsor/Vendor" color scheme (red, green, orange) is Applicable and Respectfully Sufficient.
My Opinion Only:
Regards: Sam.....
