To be honest, I don't know which it is. Slightly colour blind was the way it was worded. I never delved too far into it. All I care about is Colour Safe on the Medical!!!
If you need any info just PM but as I said ..... there is nothing you can do about it either way so just go to Gatwick and put your mind at ease one way or the other. It doesn't matter a bit what any other doctors think or say. The CAA is where it is at!
Good luck,
Bailey