I noticed a while ago that's there are several simple themes available for free that seem to correspond with the various colors that these phones come in: blue, pink, green, etc.
The colors are pretty bold in light mode, but are a nice accent in dark mode as well, even changing the default messaging app's bubble colors and various menu accents with a black background.
I'm sure others have probably seen them but perhaps not given them a try.
I'm really digging the blue one as it's my favorite color and matches my blue S10+.
I like the high contrast themes and the green 1 as well. I accidentally discovered a few days ago what you posted about. I'm glad they are making more themes that you can use dark mode in.
someone on Reddit mentioned that they found a theme by a third party developer that is compatible with dark mode, so I believe more will be available soon! And thanks for posting a photo of the themes, I didn't have time to and then forgot. 🤙
