tray unfortunately paint, glass and water dont mix

it peels right off.
eddie your rock wall looks great but i really want to be able to scrape the overflow/backwall clean, and like most ppl i really just want the overflow to match the back wall lol. Why does it have to be so hard!!!!!!! acrylic inserts are poopy and even black glass(good look finding some for a reasonable price) would look out of place.
After much thought and disappointment im gonna leave the overflow clear and instead sand and paint the pvc pipes/couplers with some gloss black Krylon fusion so it matches the bulkhead and strainer and somewhat blend in. its the best solution i can think of