Worst problem is that they are nylon - don't accept dye very well. If you spray them with vinyl dye, they'll stiffen up on you. Probably easier to find a set of black ones, or go to Snake Oyl and get a set of repros.
If you get a used set, the tags are actually pretty easy to remove - cut and pull the stitches (carefully) and peel off of the adhesive under each end. Reinstallation is pretty easy, especially if you have access to a sewing machine with zig-zag capabilities, or take them to your local upholsterer. Before I cleaned my belts, I pulled the tags, dumped the whole pile in the sink and washed with dishwashing detergent and warm water. Incredible difference before and after -
Regards,
Steve