Clear coat of flat stripe

So, if I have a glossy body color/clear; my only option to keep the flat strip flat is to apply it after the clear?

You are correct. Talk to cudaspaz about the clear coat.... he has been there done that. My stripe is on the outside the paint and is flat black ... I of course put my stripe on after I bought the car which was already painted. My painter I use will not paint over a decal.... he just will not do it no matter what. I don't know why it would seem it would be protected that way.

Oh make sure you let the clear flash out before the stripe goes on... at least a month.