Please let us alter colour schemes!
I pop in here every few months to check out what's changed, and while I'm still against this going live as Leddit 2.0, there are some things I do like- ease of creating threads, clearly defined sub-communities, and the small concession of an optional flat layout that we have to manually type in to access. :P However, one of my biggest pain-points remains: the super-bright light grey on lighter grey colour scheme.
I know I'm in a very small minority of people that even get cluster headaches to begin with, but I can't be the only one whose eyes start to twitch with fatigue for reading the CB forums for about ten minutes or so. To me, it sucks a lot. I want to try to like this format, and get used to it (though the way comments are sorted is incredibly unintuitive and confusing to me), but being able to spend the time to do that is kind of impossible. It doesn't matter how well-lit my room is, how bright or dark my screen is (I use f.lux to help manage that to mitigate triggers, too!)- this scheme is murder. As I type this I've got that familiar "warning pulse" behind my right eye. I can't spend much longer typing this out... so please, Riot, let us manage the colour scheme, or at least switch to some duller colours. Don't say it can't be done- the wonderful F.E.K. team that's been proving you wrong about your old forums has a "night" theme that makes all the difference for me.
TL;DR: less bright, more dull (or let us customise)