I just bought a Z4MR which was pristine on buying apart from a couple of stone chips. I then (very regretably) scuffed the passenger sill on my way home but got that repaired today (they repaired the whole thing, valeted and waxed the car for £120!). However, I now noticed the sill on each side is plastic and actually a slightly different (non metallic) black on both sides and I'm looking for any small imperfections on the bodywork. Maybe black wasn't the colour as it shows these odd bits more. You can hardly notice of course and it looks stunning all waxed up but I couldn't help myself today.. maybe it's just a case of "new car jitters" :?