My 8 yr old is also colour blind. We never even thought that he might be. It was at eye check up as he was having trouble reading at school & made some weird comments about it being easier to read the books in kindy because the words where bigger that we took him to have his eyes checked. The guy doing it asked me if I thought he was colour blind as he didn't get any of the tests cards right when he did them. But said it may just be that he didn't understand the test. But we did it at home (google colour blind & you can find charts that they use) & he couldn't see any of them. We did take him for a 2nd opinion & got the same results. Its funny, he can see colours, just not certain shades as someone else described. But he has never been interested in crafts & his paintings have always been kinda "slop a bit of paint on to keep them happy" So it makes sense now LOL.

eta- Lisa- It is funny hey, I asked Evan to get my green jumper off my bed & cme back saying it wasn't there, even though I knew it was & figured he was just being lazy. Anyway he came storming out telling me only the blue one was there! Then I remembered, it wouldn't look green to him lol.