Right angle trim for exterior?

[scaramoche]

Need some help folks.. Been looking for some trim to apply to the outside of my TD where my walls and roof meet. My roof is FRP, and wall's are Brich. I Was hoping to find some 1"x1" flexable rubber molding or something i could apply to the seem, but for I cant find anything......any advice would be greatly appreciated.

As a note, my seems are water tight, this is for looks more than anything, and im looking for a cheep solution.

Thanks