Alas, no more
Theme is no longer an available choice. You can have any theme you like as long as it is darkroom.
I was using planetfall but darkroom is okay and it is not a big deal. I had noticed that each theme caused some variance in appearance and it is not worth the effort to make them all work out. I see that geek is still in another theme and I hope that it will be eventually be changed to match everything else but if not it is not a big deal.