yes mate they luk class on a clio aslong as you put a decent exhaust on it. 1st rule they have to be black im afraid unless you get blue sparco flaps for a blue clio. im gna stick black flaps to my car, i have an RXE (MK2) in gold so i am puttin black mudflaps on, tinting the windows and putting a letterbox type exhaust that will fit flush with the rear bumper, if you have a stock clio with just mudflaps i dont know if it would really suit.
Out with people who are bothered about Image, Id think theyd def be useful on a Cup as every one I have seen has lots of small chips along the bottom of the doors and sideskirts caused by the wider track.