From a quick search:
How to remove yellowing from an old Atari case
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I saw that, but again, my big concern was although it would remove the yellow, would it return it to close to the original gray or would it make it to light. The guy in that thread says, "I tried some keys off a XEGS, but results were not so good", so I'm a bit skeptical.
- Grover Torbel likes this