iPad color change issue started after I purchased a after market non Apple charging cable. There were no problems at first. It was a couple weeks later before the color change occurred. Took it to Apple store. Said to buy a new one. Well no thanks, I’ll wait to upgrade to the Pro. I decided to only use the alt cord when I was too far from an outlet. I started using the original cord again to charge the iPad. After several charges and complete discharges, the last one sitting for 3-4 days before charging, the color changed back.