Another thing to think about is Tamiya's paints do not have strong pigments and are greatly effected by the basecoat or primer color. As an example on the Xanavi Nissans you cannot paint the car silver and then mask and paint the red over the silver, you need a basecoat of white for the red to match the decals. And I have had multiple decal sets from the same kit and there is some slight differences in color although this seems to be less of a problem on newer kits.