I'm going to talk about themes in just a moment. But first, I would like to ask you some questions, Moridin. Was the old site too much? The old site used white quite liberally in its main area too. Also, is Facebook or Gmail too bright? They also use white very liberally.
I have identified some reasons why people might feel the new site is brighter. I don't really think so, because really the "content" area is exactly the same color as it always was, but here are my theories. First, that the site has a variable width so proportionally there is more white. But that would have been the same as the old site if I had it be more of a variable width as well. The width might matter depending on your monitor width because you may or may not see the purple background to the sides which cools things down immensely. Second theory is that the green in the logo cooled things down in the old site. We changed it to yellow to fit the color scheme which could increase brightness.
As for themes themselves, and a dark theme, we'd have to create the theme ourselves. It is not on our immediate agenda to create a dark theme. New theming is nontrivial to do. If you change one thing, that affects other things. Changing the white to a dark color is a radical change that would require total rework to everything else. The theming is what took this version of 17S a long time to make. So when I read, "why can't we have a dark theme" I read, "Remember all the work you did? Do it again and totally differently this time." So... try and keep that in perspective. It is not trivial. Though it is easier to theme on IPS4 it is not trivial by any means. We are all fairly particular and perfectionists on site design. Sometimes we need to pad things by a pixel, or something, and we agonize over it a long time.
Also additional skins add more overhead to software updates and such.
That's solidly soon(tm). Obviously I have focused on making this update actually work, and once tweaking is done I can do other projects.
Soon(tm) on HTTPS, same as Awards. I'll see how logging in through Facebook works. It really didn't work great on the old site.
Friends don't exist anymore. ...Okay that sounded really dark out of context.
You know... in retrospect I probably should have just told you you could do that, since you didn't have max size browser windows. (I was tired, what can I say.)
Unfortunately it is extremely nontrivial to activate the mobile site "always" as you suggest. It is created using clever CSS that responds to the window size.