I originally painted the back of my aquarium, and today decided to scrape it clean to let in more light.
The interim effect is really interesting ... This could be really cool with green paint.
I originally painted with cheapo acrylic craft paint, swirling some red-brown and white into black for warmth and depth. And I thought it'd come off really easily if I changed my mind.
If I did it again I'd probably do half red brown and half black (bcause my substrate is a warm color), then scrape it like this (leaving more black around the mechanicals I wish to conceal) and paint on several shades of green. If I wanted light to come through I'd mix the green with a matte acrylic gel medium to sort of "frost" the glass.
Might not work but I wish I could try!! For now I'll just get back to scraping ...
Sent from my iPhone with three hands tied behind my back.