If you want the little triangles tinted, it's best to find a shop that has a cutting machine that automatically cuts all the pieces they need. Most shops that hand cut (which I wouldn't want cutting on my car in the first place) have issue with cutting it on the outside and then getting it to fit when they apply on the inside. My shop had no issue, just a weird looking applicator to smooth it out. Both are tinted on the inside and look great.
Also helps if you get a shop that does Windshields too. Had Air 80 installed on the windshield while I was at it, didn't even have to ask about the triangles. Then again, this shop purchased the glass off a Tesla to get exact measurements as they're one of the few shops out here that does the whole rear glass on the 3s really well.