I'd like some really basic theming (color) options

[StachuDotNet]

At minimum, I want a 'light mode' that I can toggle between.

My specific use case is that I often screen-shot Dark and send the screenshot to my eInk tablet to later review the UI and raw over it (sketching). The current Dark background doesn't render well on it.

If this is is unlikely to be supported officially, I'll probably write a small bookmarklet to run JS that does this for me soon.

[StachuDotNet]

IIRC, there's a branch of old code somewhere that included efforts towards this.

[pbiggar]

I'd like to support this, but probably in a reasonable distant future, as this will cost us a lot of work for each new feature, so this probably only makes sense to add once there isn't so much to change