Use Custom Cumulative Flow Colours on Cumulative Flow Gadget

As a JIRA Administrator,
I want to have the colours that I customized on the Cumulative Flow Diagram in the Chart Board show up in the dashboard gadgets,
So that the team can tell what the colours mean and have a seamless Cumulative Flow experience.

Repro:

1. Customize your Greenhopper Cumulative Flow colours by click the colours in the legend and setting them (see attached).
2. Add a cumulative flow gadget to your dashboard

Expected:
Colours follow what you just set up on the chard board.

Actual:
Colours are some weird, random, hard to fathom set of default colours.