Yep! I used a water-based acrylic paint, specifically this ‘Brainmatter Beige’ that I found at a hobby shop, it’s a very close match for GMK L9 to my eyes and water-based acrylic is a bit easier to safely remove.
I use a 000 brush for infill, you can be a bit sloppy with application at first and then wipe off the excess with non-acetone nail polish remover or rubbing alcohol on cotton squares or q tips. You can rub the q-tip right across the engraving and it’ll clean off the excess paint without removing the paint in the engraving.