I can confirm that IR(R) with colour blindness is not a problem as I've done it and had the rating issued! I believe that it is also now possible to get a full IR with the "Daylight only" restriction. I'd love a go in a big jet sim and a few hundred quid for a one off experience sounds great but I cant see the attraction of doing further "training" on one for fun certainly not if real flying even a simple aircraft is an alternative.