Got MS with Titanium Metallic paint, and had some visible scratch on the rear fender. I purchased the touch-up paint from Tesla (PPTI), but it does not match the color after application. Went to a Tesla approved autobody shop, and they want $2k to repair, claimed they have to take out the fender and reprogram the car through Tesla. 1. Anyone had luck in matching this color? 2. Does going specifically to Tesla approved autobody shops necessary? Thanks for your insights.