If you don't want to use acetone for some reason, and the logo is relatively small, I've also had great success with sugar. Just grab a pinch with a towel or rag, and start rubbing. The sugar granules are just hard enough to abraded the printed logos but will not scratch the metal underneath. Also works on matte plastic. You wouldn't want to use it on larger areas because it's a little more work than acetone.
If you don't want to use acetone for some reason, and the logo is relatively small, I've also had great success with sugar. Just grab a pinch with a towel or rag, and start rubbing. The sugar granules are just hard enough to abraded the printed logos but will not scratch the metal underneath. Also works on matte plastic. You wouldn't want to use it on larger areas because it's a little more work than acetone.