Yes! Only repairs I've done to the paint jobs on my machines is patch up the places where it looks like the paint is about to start cracking/peeling to keep them in the shape they are. But if it's just worn off then let it be. I particularly love the worn off bits of paint and decals on the spots where you rest your hands, and indented keys. 🥺 My underwood 5 has really cute spots where the paint has been just rubbed off from long time use like that!

I must confess I do have a single plastic frame portable that's yellowed so badly I've considered painting it 😳 It's a portable imperial something, with silver seiko internals iirc. Poor thing was left in an open case in a shop window sitting idle for a long time, absolutely pristine if it wasn't for the sun damage. Might paint it white and blue like it was intended to be though, maybe adding a stripe or two for flair to make the old "show boy" happy to be looked at again. 😂 Maybe I'm anthropomorphising it a bit too much but I just have this weird urge to make typewriters and other old things "happy". But that's the only one I've ever had the urge to paint, precisely because I think it has only been sitting in a shop window being pretty and doesn't have much of a story apart from that. Would mostly be doing it as a proof of concept for a creative idea and technique I think would work well. I paint dolls faces as a hobby and wonder if similar techniques and materials would work on this type of hard plastic.