A ghetto version that should work is plasti dip glossifier. I plasti dip spray painted part of a frame years ago, because i hated the colour but wanted to be able to revert back to the original paint job for when i want to sell it. It worked surprisingly well, if you dont look too close. And they had a can to make the paint mat, and one to make it gloss.
The brand is plasti dip, from memory. 1 can would be more than enough. The most annoying part is the prep work, basically masking tape and some plastic / paper sheet / foil.
