Any painter who is really a painter and knows what they are doing can match paint.... WK0 is almost perfect in PPG paint just needs a tad bit more of yellow in it... Extremely simple. And any good painter always does a test pannel before spraying and sprays the base then does 2,3,4,5 coat pearl let downs clears it and checks the test pannel to the the fenders to see just how much pearl it has on it.. Generally nissans have 2 1/2 - 3 coats of pearl.... Im the head painter at A NISSAN dealers collision center. 2 big reasons for the test pannel is who knows how good the other painter who put that fresh paint on your car was and how many coats of pearl he put. Another is maybe he used dupont , BASF(diamont),Sikkens ect.... and there color match might not be good... Also blending a pearl is the most simple thing we get mainly QX3 and QX1 nissan pearls 3 or 4 of them a day and they all require blending . PM me if you want to take it to a NISSAN dealer its gaurenteed 100% for life.... No problems at all. Our shop is backed by PPG 100% all of our painters are ICAR and PPG certified.