Most people who buy a specific brand and model do so because they like the original colour scheme, decals and finish. I would repaint if it were really bad and if I redid the original scheme. Unfortunately it is hard to replicate the colours in most instances.

If you repaint a bike in a non original style then it generally lowers the value compared to a decent original bike, even if the paint is a lot better.

Again, there are billions of frames in the world and if you want to repaint it then do it.