The frosted glass is specifically to diffuse an RGB LED lamp thing I made, so every scratch and other degradation on this thing so far is very prominent. There must be 8 coats of Rustoleum frosted glass spray on it. It's a very thick matte finish.
For all the frosted glass tutorials out there, like on wine glasses, you would think a few of them would post an update that everything came off or otherwise looks terrible after a week, and perhaps a few would have shown how to solve it.
My concern is that whatever enamel or acrylic spray I apply will either add a gloss, or reduce opacity by filling in the surface and eliminating any light refraction.
The only constraint is that I need to be able to buy it nearby at Walmart or Home Depot or something. I won't have time to order it online because it's a gift. Preferably a Rustoleum product because it's cheap. Would the American Accents Ultra Cover Matte Clear work?