While I like the bright background it comes with a few visual issues:
On the front page of the forums the big sections come with a banner that always seems to have a white font - while you can read (thanks to the shadows) it i think a slightly darker background would increase readability a lot.
Same goes for the top page numbers:
Also:
The icon over the upper right corner to move YouTube-Videos is sometimes not very visibile because it layers over the text or whatever is above.
Moving videos under the last line with that icon at the corner (-> point before) seems impossible.
Sometimes the editor glitches out and doesn't let you select any text (can't provide steps to recreate it, just happened once to me.) - I think this is related to embedding YouTube-Videos and maybe moving them? Might experiment more and record it if it happens again.
On mobile you can't click below a quote (or edit anything but that quote) if you hold backspace too long
A very very minor one: if you try to move a YouTube-Vid and let go "in the video" while dragging, it's stuck at moving (without still dragging obv) and you have to click again to let go.
I like the embedding and those are just minor issues - just listing what I found.
I'd also love to have a full more bright theme - if that's possible.
PS: Love the pink background, where is that one from? Is that some new art? The other ones look very familiar...
Ah another thing, we didn't have this in the old forums either - but do you have a way of adding [ spoiler ] tags just like lists etc?