Oh, it does, I'm referring to as it's falling. On the ground it has some fancy algorithms to make it look pretty, then it's colored by (in this case) portal_paint_color. You can't change the color without changing Conversion Gel's too, unfortunately.
Just don't have it and Conversion Gel in the same map?
Conversion Gel is hardly ever used anyways (or at least in my experience) so I wouldn't expect it to matter that much.
Back before Grox quit mapping, he could make amazing puzzles with conversion gel.
I'm not really sure how the board with the spray paint on it fits into the scene; the chambers are built by robotic arms.
Yeah; you mentioned people didn't try the 'under construction' detailing. My sequitur (even though I was poor in my efforts to point it out) was that that kind of detailing isn't usually used in destroyed chambers.
Looks brilliant, keep it up!