Dashboard not changing fully white

Grafana Dashboards
1

I was trying “Node Exporter full” dashboard template. It was rendering correctly:

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However when I change the theme to light, those gauges look weird. They retain the black background:

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How can I change that black background color in gauges? (I honestly feel in light theme it should be some light colored.)

2

Somethings wrong here. After changing theme (dark to light or light to dark), gauge’s inner color doesnt change. I have to refresh the page. Definitely a bug !