Quote from Pringlesman »Black acrylic paint mixed with just a little bit of white to tone down the gloss. Use thin layers.
Sweet! I'm totally going to investigate these. Thank you!Quote from izzetmage »Try this, maybe? I expect it'll be more fiddly since you're basically gluing four strips instead of one, and if the centering is off, there will be uncovered regions on the altered card.
Funnily enough, there are people who do the exact opposite: white-border all their cards, instead of black-bordering them.