MASKING FOR TWO TONES

I have recently painted and model where I painted white over styrene as a base coat. After a few days I masked over the areas where I whated to keep white. I used brand new drafting tape (3M). I then proceded to spray color number two, a light blue) in the areas I wanted. When I thought things where dry enough I pulled the masking off. I did not see any paint come of with the tape and it ddoes not appear to have left an adhesive residue but the gloss white is no longer gloss. It looks kind of rough looking but it is not tape adhesive. Any ideas? Could it be that the top of the paint was dry but underneath was still wet so when I lifted the mask it took the gloss with it. I probably should have looked at the tape closer to see if any thing stuck to it. I did look at some peices and it seem fine but it still is not glossy.

Scott