theme picking up custom market press theme inappropriatesly

I am following the instructions - it is in the proper directory with proper name - and defintely WORKS...

...but my theme is picking up the style sheet and was wrecking the site unknown to me. It's not SUPPOSED to pick up the style sheet - that's the whole point is that that sheet is specific to marketpress. Anyone got any ideas why this might be happening? Perhaps my minify plugin?