I have a dilemma. The matte chip for 5RP 5/12 in my student book does not match the 5RP glossy chip (teensy weensy as it it) on my Munsell poster (it is more like 7.5RP 5/12). It could be matte vs. glossy or the ink they are printed with. Would someone else please compare these and see what you think? If they do differ, which should be our target? My silk is glossy so I'm thinking I should use the glossy poster as my target.