easydigitaldownloads/Easy-Digital-Downloads — pull request #1996 by JustinSainton (2014-02-08 00:25:23+00:00)
Title: When there are multiple y axes, color code.

The Flot API is interesting - there are some open tickets on different areas to expand the ability to format axis labels, but as of right now, this semi-hacky way seems it might be the best approach. I've tested several multiple axis reports, it seems like it should work fine. But I'm über-open to there being a better way.