How th change Color for built-in email client

[bntran02]

Ok so I have a E4GT and have been using the built-in email client. I have 4 email accounts set up. Is there a way to change the color assigned to each email account? It's kind of annoying because I would prefer the assigned color to closely related to the email address' theme. It makes it confusing when you view all mail from all inboxes.

e.i.
Yahoo: Puple
Google: Grey
Comcast: Red
etc...