Ouch! This looks like two different issues! The Red & Green banding is a T-CON failure within the display assembly. And the telescope look is caused when the defuser sheets having curled from heat damage up or gotten wet from a spill.
In any case the solution is the same your internal display needs replacement! Here’s part info:
2012 13” MacBook Pro retina display assembly Apple P/N 661-7014
Sadly, these are very hard to find. You might find one which has anti-defective coating failure which you can clean off.
Here’s the guide you’ll need to follow to replace yours [guide|13554]