I do like the simplicity of completely random, but my first instinct was definitely to want some sliders or toggles. Personally prefer desktops to be extremely dark, and many of them were nice, but way too bright on a section. User control would definitely end up with a different experience, and totally respect the simplicity.

Might end up tweaking it to my tastes and a few other resolutions, like for my ultra wide.

What could be nice, and not require user input, is detect whether the user has dark mode enabled, and then use that as an input variable.