Hey guys - hoping someone can help. I have a small patch of what I think is etched glass on the back of my aquarium. Looks like someone breathed on cold glass and it fogged up. I've tried a ton of different glass cleaners and it goes away, only to magically reappear like someone is breathing on to it again and fogging it up. I only noticed it when I went to apply a black plastic film as a background. If I paint it with a matte acrylic paint, will the etching still be visible?