I received a yellow bba off ebay for $85 to fix up and restore its original color. This was my first ever attempt to whitening and old game accessory. I searched up some youtube videos on what was the best way to do so and I found out that salon care 40 volume creme worked the best in my opinion. All you would need to do is spread the cream on the item that is yellowed. I use a q-tip and dipped it in the salon care bottle and spread it across the bba carefully. I taped the side sticker and the bottom sticker and taped the opening were you put the ethernet cable in. After that and spreading on the bba, I wrapped it in plastic wrap and let it sit out in the sun for a few hours. I would check on it about every 20-30 minutes to make sure the bba didn't over heat or the cream spread around. I would say I did a pretty good job and really liked how it came out in the end. It looks good and back to its original color