Series Override - Color. Does not work

If I have a Graph with lines, then I want to override the color to be specific to a color scheme for the metric items.
When I set this manually, it is not retained when selecting different metric where some metrics do not have a value.

I went to series override to always set specific metrics to a color, but when I select the “color” override and the “change” option I get a bunch of errors in the browser:

Firstly, this is what appears:

Then in the Chrome Console:

what version of grafana are you using?

commit: c47f670a5

The. Upgrade this is fixed in latest stable

Thanks, that has fixed it.