TT,
Talk to Dr. A.M.Pape, Bellpost Hill Medical Clinic, Geelong, Victoria.
Arthur is the Australia expert on non-standard colour perception and pilot licensing standards.
There are many pilots who are only flying because of his efforts. He fought and won the original AAT case against DCA, on this subject.
Google his name, that should bring up some interesting information.
Start with <http://www.ozipilots.com.au/index.php?option=com_joomlaboard&id=693&catid=1&func=sb_pdf>
Tootle pip!!