I've been using iMacs for over a decade and I've never had the keyboard turn yellow. Occasionally they will build up with dirt and I use a alcohol wipe or wash cloth to clean it. I've used a magic eraser from time to time as well, no issues.
I've been using iMacs for over a decade and I've never had the keyboard turn yellow. Occasionally they will build up with dirt and I use a alcohol wipe or wash cloth to clean it. I've used a magic eraser from time to time as well, no issues.