Follow this link to see a 3x3p with 6 full outputs of white paint from 1:1:1 ratio (2 of each used) of primary colors. That fills an entire space pipe.

https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=3333217469

umm

The four outputs could be combined into a single space pipe which would be 2/3rd full and fill the train collectors much faster.

Please see my guide for the Blueprint and more:

https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=3320548627