With the app Dual Wallpaper you can set separate papes for light and dark mode respectively if you have it automatically changing with time.
https://play.google.com/store/apps/details?id=de.dlyt.yanndroid.dualwallpaper
I felt it was sufficiently different to the Duality thread since it always needs two papes working in tandem.
They should be suited for their respective theme, so if both are very bright that wouldn't fit the dark theme in the evening/night very well.

Please post great wallpaper pairs that complement each other when switching from one to the other.