Yep, I'm starting to consider it for standard use as well.

However, some - well, in fact one - contrasts seems to be overdone when inverted.
My light mode, note the vertical column separator lines in the list appear very faint - which is what I want.
Now with dark mode, these lines are a tad too dominant for my liking. Is this color the same as for the inactive tab header borders?
Another one - breadcrumbs
Pane 1 (top) Now in dark mode - knowing the active pane form the inactive one is rather guessing.
Pane 2 (bottom) Here it's a bit clearer visually. I wonder, why there shouldn't be colored breadcrumbs in dark mode.
Last utility issue: I had to adapt some colors, mostly desaturation. Of course, it was easy by copying existing ones and deactivate them. Now I wonder how to toggle them easily all at once when flipping GUI mode. Is SC colorfilter() the way to go? I would have to double the color filter definitions in the script, right?