It will be something that's been played with before, Laura, but never with Clark as a kid to my knowledge.
Thanks Lynn, that story would be even more heartbreaking if the kid was red-green color blind =( I didn't necessarily like that Martha was getting him glasses so his color vision came out 'normal' but it's been done before with his vision skills a lot in fics and, sadly, fits well for a rural community in the 70's, especially with all his parents are trying to keep quiet.
Although now I'm picturing the linked research in a world where Superman can come up and say 'well, I don't know exactly how birds, bees or reptiles see it... but here's what *I* see!'
