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Turquoise stuff on keycaps
(lemmy.nz)
Let us help you identify that mysterious object you’ve found.
Currently in CHALLENGE mode: If you've got something obscure knocking about, post a picture, and let's see how we do. Please prefix such posts with "CHALLENGE:" so we know we've got a fighting chance.
Definitely copper corrosion. Rose gold is an alloy of copper and gold, and since it's a mechanical keyboard, I doubt they're springing for super high quality stuff, so it's probably more copper than gold. As another said, white vinegar with a few tablespoons of salt should remove the corossion, but I'm not sure how the rest of the keycap will hold up.