Board Thread:Questions and Answers/@comment-5885468-20130126053846/@comment-80.229.249.36-20130217220930

You could try a sorting machine and colours. Its an ass to set up the first time because you need to craft paintpots, but the sorter is supposed to cycle through colours.

The sorting machine needs blue power but one thermoelectric will do it without batteries or panels, just wait for it to charge.