Let’s have a go at it.
As of today, I’ve begun work on a night version of the CSS map cs_compound. It’s quite simple, and the work done so far has been very basic but effective. Here’s a few screenshots:
There’s some issues, however. That nasty sun entity hasn’t been deleted, making the map seem like it’s on the moon. The areaportals are showing up with their hammer textures and need to be fixed/deleted (you can see these as the cyan-colored slivers in all three pictures). There’s also a large black square in the CT spawn that eludes my knowledge, but should be an easy enough fix.