Why is my screen tinted red

Hello!

So recently my screen goes in and out of a ‘red tint’ - (see the attached pictures).

There is no real pattern for this happening, it seems to be random. The way to fix it is to typically quit some applications, some times a ‘sudo purge’ in terminal does the trick, or put to sleep for a few minutes. I’m going to take it apart and have a dust, just a clean up as it seems to be running a little hot (just moved to Australia, so maybe its related?).

Anyway I’m not too sure what is going on. If anyone has any explanation and/or help that would be great. (I cant seem to find a similar problem posted online).

Thanks.