The official and completely scientific Kpopalypse colour blindness test

I'm colour blind.  Apparently, this is a completely fucking fascinating subject to absolutely everyone, judging by the amount of questions that I get asked about it when people find out.  To cater to this incredible fascination, this post will include some awesome colour blindness facts (so if I get any more annoying questions about it I can just link people to here instead of answering them directly over and over) and also a test so you can test your own colour blindness - with k-pop, of course!