LMichaels
TVWBB 2-Star Olympian
I have tried on a black lidded Genesis. Again you can MASK the issue by putting a light oil on it and buffing, or furniture polish, etc. I even tried a power buffer. Makes it cleaner sure but the fade is the pigment. And no you cannot "sand glass" as that is what the lid is technically made of. Glass fused to steel. It's why the lid will literally "shatter". If you look VERY closely you can see the pigment particles. Other colors don't show it as much but I am sure the UV does a number on them as well. It is what it is. I am sure too the later grills being made in China are made with even far worse pigments.