I dont know if anyone else has ever seen this, I just figured it out today.

Spots
If you mean getting on the roof, then everyone have seen it. 
If you mean that you have spots, then it either isn’t that bad or it’s not showing in the HUD. 
I feel like an idiot :bored:
You see, I have a bird cage in the same room as my computer… and my bird has a mirror (im serious). Anyways, it was playing around with the mirror and the light was reflecting on the screen. At least I THINK thats what happened… might have been UFOs or something :bash:
I always wondered that there are shadows in a dark rainy night (e.g. for the tree).
Ive never noticed that before. And if anything the shadow would be pointing out (towards the main entrance), as the only light source is from the warehouse (depot?).
Maybe the radar map is haunted ? Think of all those digital souls who died on that map.
“You removed the headstones but you didn’t remove the bodies!”
- Polgergiest
I don’t know what you mean by “glow red”, but experiment with the following cvars:
cg_drawCrosshair
cg_crosshairSize
cg_crosshairPulse
cg_crosshairColor
cg_crosshairAlpha
cg_crosshairColorAlt
cg_crosshairAlphaAlt
Or maybe you could make something with a red lightbulb and a mirror. 
You know what would make a good sequel to the Wurzburg (Radar) map? Perhaps making a part 2 of the Radar map and creating a large catacomb or tomb where the ancient vikings or germans were buried. The story would go like this : the Allies successfully acquired the radar parts and during the escape with the truck, the truck gets damaged. The shelling from the Axis and Allies break open an entrance to the unknown tomb. The allies with no other option retreat into the tomb to hide from the advancing Axis forces till help comes. The allies have stored the radar parts in a far off room in the tombs. The axis goal is to get the radar parts back and escape from the tomb. (perhaps making the tomb entrance dynomitable so to win the game is to get the parts out and dynomite the entrance, forever trapping the allies in the tomb) The Allies goal is to hold back the axis and prevent them from stealing back the radar parts till the clock runs out. What do you guys and mapmakers think?