I was at the Old Sewing Machine Guy's shop a couple of weeks ago. (I'm in Dallas, but they probably do it everywhere.) They will take the guts out of a machine and send it out to have it repainted. Then they put the guts back in. I mention that as an option for you.
I found this one that seems interesting:
https://stitchnerd.wordpress.com/201...ewing-machine/
Good luck and keep us informed.
bkay