I am trying to paint ABS with acrylics. I tried in the past with brushes but it was not uniform. Yesterday I tried with sponges and the results were way better, but the colour is not uniform. Left piece was primed and I made three passes with the sponge, right is not coloured. I kinda want to paint over the white ABS since it is sort of blueish and I want a more pure white colour, any suggestions?