The White Paints do less DPS for solo opponents so you only want to use them when you are forced to move since they can be used while moving. If you are stationary, they are .6% less DPS so don't both with them. For Multiple opponents, then they do give you more DPS then the standard rotation if attacking 2 or more opponents, but I still wouldn't bother with them since most multiple opponents are not that strong anyways and at the most might make you do 1 extra attack to kill them.
But the 12 seconds of NO DPS while you are casting all 3 of your 4 second recast timed MOTIFs ... I don't understand this. Literally 12 seconds of no DPS ... I am still running numbers but I feel like the burst isn't worth the wait at that point. Only if you are about to be in a scene where the enemy is not targetable does it feel worth doing in a fight.