Hi @bg1900@magnus - some updates for you! In summary, it's now possible to customize (and dynamically set) background color in Table column settings on both Cloud and self-hosted Retool (v3.6). See these comments on other similar posts for more context on where/how to do so:
And this is perhaps further from what you're looking for, but since I had mentioned status indicators above:
Hope this gets you closer if not all the way to the functionality you were looking for!