Check out this awesome modification of Clearmint by Rusty Mitchell. He took Clearmint and went a few steps beyond to make an excellent mod for those that want more distinction between peppers and panels, and added tweaks here and there. He has put up a few larger screenshots on his site and has made the theme available for download. You can grab it here. I will also be adding it to the clearmint page itself tomorrow.

Thanks for the modification Rusty!