well the glitter stuff is for crafts, like using on candle holders and stuff, so i hope it won't. only time will tell. i am going to try to hold my retrofit over my tank today and see what it looks like, need to get the canopy built soon
i think the most important part was cleaning the glass very well so the paint would adhear to it. i also sprayed very thick coats of paint, and got no bubbles with the glitter paint. the only problem i can see is equipment scraping the paint off, so i have to be really careful about it