Mods only make it harder to shift mate, and for someone who is not into mods, they will view it as a thrashed bad boy car.

Personally i would strip the roof off and get the wheels finished in silver again, or swap with someone wanting black alloys, get the tints out.

Mods will massively reduce your market and in turn affect the price. By making it more standard you appeal to all and also avoid any issues of people judging the car and owner on the mods.