Good point, Lennard Zinn has written a few articles about this very problem, where bikes built for tall folk need to be both longer AND stronger, so pretty much impossible. I'll just think of my bike as a proportional upsize of a 650b road bike.

If the decals are on top of the clear coat, I say go for it. My decals were underneath the clear coat, so I was stuck with them. The gorrilla tape may work if you use it add black stripes. They also sell various different colors and designs of duck brand duct tape which might be cool.