I have a color matched bra for Hopper that I got from
Car Bras
For the A3, I went with the clear bra. I've had it 2 years so far, no issues. Can only tell it's there where the seams start. Otherwise, it's basically invisible.
Only issue there, however, is it's not something you can really take on and off. So if you ever decide you want to get those chips fixed on the front end, you'd have to remove the old clear bra, and pay to get a new one. If you've ever considered getting those fixed, this may be the time. Then get the clear bra installed after.
If you decide to go that route, I'd try and find a good reputable tint shop, chances are, they also do clear bras.