Also. I'd love more color variations of the octoboards dark themes. A blue version would be sweet. Just not a huge fan of purple.
This.
I'd also like to suggest making the white background of the postbit a little darker and/or making the text a little darker, at least on the light skins. It would make reading text a tiny bit easier. :)
Another small idea I had would be to separate posts a little more. It's difficult to explain what I mean exactly, but perhaps a thin border around each post would help, just so it would be easy to see each them individually? I've seen a few signatures and there's a very faint, dotted line between them and the post content, so even something akin to that would help, but I personally prefer full lines, even between signatures and posts.
Too cool for dotted lines.
Oh, a final thing of mine concerns aesthetics. Maybe a few more ink splotches around the site? This is Splatoon, after all.