Customizing font size and color

Is it possible to customize font size, fore and back ground color by administrator or even by member?

You will be able to modify the CSS files from the admin panel hopefuly in the next release.
There seems to be a bug in it right now. ticket added here http://www.boonex.com/trac/dolphin/ticket/912
a member can change their profile style by visiting their profile and clicking Customize from the actions block.