More contrast between panel background and page background color

This is mostly just an aesthetics question. I guess my monitor has really poor contrast. The slightly lighter shade of black on the background of a panel doesn’t look very different than the absolute black that’s the page background. Is it possible to adjust the panel background globally so that a time series plot’s borders are more obvious? For me, it’s just panels floating in a black background and it’s harder to visually group the legend with the panel it belongs to.

I’m using Grafana 8.2.1. I know about the Transparent Background option for panels, and I have that set to off (not transparent). It’s just still not enough contrast. Wondering if the solution requires modifying CSS or if there’s a setting I just haven’t spotted.

can you share a screenshot of your issue?