The Night Theme is just bad. The lighting is horrible, you can't really tell from a distance what team a player is on, and the on player effects are hard to notice such as jarate, and then theres the purple buildings...
Not a fan of the night theme, reduces my enjoyment of the map and it was being complained about all night. At the very least there should be a vote to enable/disable the night theme since(at least from what I gathered last night) its not very popular.