I'd contact Sterling, they have my measurements for my stripes and it looks like yours are the same width/spacing. I think it would look cool the way you described it. I think the hardest part would be getting the purple close to your bike's purple.I have been wanting to do my 2 up seat in a similiar way. I want to have the 2up seat flow with the paint scheme. It would be with purple leather and gray alligator skin stripes.
Sometimes I think you guys are relatedTim, it has been a year, how is that Sterling Seat treating you?