Do you have a link please @midlifecrisis? Thanks - I can't seem to find them. When you say coupe would they fit a GS? I can't tell if they're a standard diameter / fit or wheel-specific.I put black ones from Eurospares on my Coupe, they fit both cars and are metal as opposed to the original more expensive plastic ones.
For only £7 a corner you can buy both sets and compare and contrast.
Red would suit the right body colour or red brake calipers.