If we’re talking metal yoyos, then yea it’s certainly the most durable. Not going to get the detail you would in a real painted piece, but you can get some designs/artsy stuff in a durable finish.
If you’re doing plastic, you dye some pretty crazy stuff (again nowhere near painted detail), or if you have a clear body you can paint the inside.
Outsides of yo-yos can be painted, but they’re not going to be super durable long term.
Kyle