i like ALL the colors...the white [T234?] does take a long time to dry, but, the grey, black and red, depending how heavy, are dry in 15 mins!! sand it in 30... i also like the coverage, you don't need a lot for good, 1 shot coverage, yet, still provide a 'barrier' for the plastic...i like to use #2000 paper, wet, before any color coats..
and, when wet, it may look grainy, but, when dry, smooth as a baby's buuuuut...