For those with colour blindness I know there has been some success with coloured contact lenses, I don't know the details, it is probably not suitable for ALL types of colour blindness and I don't know how the CAA would look at correcting with lenses (possibly some lobbying and persistence needed here).
Ben, if you thought the PPL exams were hard wait till you try the ATPL ones! (hope you get that far).
Good luck,
Foxmoth