Frank, thank you for asking.
Yes, please, I'd like to make different colours for the backend of the wp-install to the different user levels (as you defined the question).
... Actually my English is not so good to understand precisely your question :)
I'll explain as I can.
The end result is, the client will make a level choice, will pay and will register. When the user go to his/hers private area or community area the username will be coloured with the colour of the user level. In the forum the usernames will show the user's level.
I'm not sure Adminimize can do that. Just I think this plugin is a magic wand and I'm very curious:)
Any ideas will be appreciated.
Thank you for your time, Frank!