Yeah you could probably get away with calling them red and blue tunnel. If you just make it so that color is easily recognizable from the outside that would probably be enough.
I have some further nitpicks for you:
https://imgur.com/OaZx92y
You can bump your head on these supports that cross the roof. Trying to jump through the corridor only to be stopped dead in your tracks is really frustrating.
https://imgur.com/XAWWHqH
you often want to jump out of this tunnel exit as a soldier, but it's extremely easy to hit the door frame and just stop, so I'd like to see the exit kind "smoothed out" so that even if you jump isn't 100% accurate you would still make it outside. Don't narrow the tunnel though, that would be a bad idea. Just mess with the exit part.
https://imgur.com/ybv0BMh
https://imgur.com/Oty991b
You can stand on the edge of this roof outside of blu spawn.
https://imgur.com/lqh2kKE
https://imgur.com/TpbxoxP
Clipping in this corner is pretty wonky. This is as close as I was able to get to the fence. It's the same on both sides of the map.
https://imgur.com/iC9EIpx
It's pretty difficult to replicate, but I was able to damage myself through this awning while I was standing on top of it and had stickies placed underneath. I think there might be a tiny gap near the wall or something. Both awnings on middle had this issue