Get the color being used for a layer

[simonwistow]

When trying to make an external key for a chart it would be useful to be able to somehow get the color being used for a layer so that I can make the key the same color and have it change if I change theme.

[BradleyFord]

@simonwistow I agree

We are currently using a different library and are planning to move to epoch. We use an external key in this manner.

[rsandor]

So there are two possible colors that are being used for each of the charts: the fill and stroke colors. I assume you want whatever is available, and when both are you want the fill?

[rsandor]

The colors are dictated by the CSS. Specifically you can find the color of a particular category by using the div.ref.category1 through div.ref.category20 classes inside a div with the class .epoch.

[rsandor]

Going to add a documentation issue that specifically addresses communicating this.

[Marco-Sulla]

How can I change the color of a realtime graph? I've fond only this bad trick:

chart.getVisibleLayers()[0].className = "layer category2"
chart.redraw()