Sarge, I downloaded all the skins today before posting this. The line in Chocolate skin file is: <element id="Content[Artwork].Body.Default" bg="237,222,201" fg="46,21,7" bdr="92,25,22" />
It's clerical grey not dark brown in my PC.
As for other skins, the lines around selected Artwork are:
red on red background in Nacho
and blue on the blue background in BeachBee. It needs more contrast IMHO.
When I installed MB on my friend's laptop with Windows XP the colours looked slightly different than in mine PC with Windows 7, so maybe it's just because the Display Properties used, but please check it just in case.