I have been using #25 for a couple of days now and noticed at some point that it's using gray background instead of #000000 or whatever actual black is and while there is a customization option (that I used), I don't feel confident in my skills to use it.

My Fairphone 5 has an AMOLED display so actual black is displayed by not turning on pixels showing black and as screensaver may show up a lot whil echarging, I think having an option available by default and maybe even default for the screensaver/daydream mode could be a good idea.