It would be great if Channels offered theming support or a few different themes. Emby does this quite nicely.
Use the search. there are many other thread's about this topic. Many years old.
They have no plans to add themes or change colors.
If you want a "dark" themed Channels DVR app, you can use the user made "Carbon Theme" apk and sideload it. (Android / Android TV only)
Search was the first thing I tried. However, I didn't see useful results. Perhaps if more users request it, they may reconsider? Does the Carbon Theme work on Amazon Fire TV? Thanks for the help.
Really? I find that hard to believe. Since, I find 7 in just 3 secs and on first page of the results....
If you were a Channels DVR developer, I would suggest that one way to stop new theme request threads, would be to give the users what they are asking for. But anyway, thank you very much for your helpful response.