I dissagree about stone chips also about yellow being hard to clean
yes they do show chips but black and dark blue show them really bad, swirl marks and small blemishes hardly show on yellow at all
the yellow touchup pen is fookin' ace, blob some paint in the chip to over fill it, wait a day for it to harden and shrink then T cut it smooth and the chip vanishes
I have done 4 on mine and I challenge you to spot them