Wannabe
I have red/green colour deficiency - The most common form.
I have CPL. My medical is endorsed "Valid in Australian Airspace Only" and I understand I am not able to go further than CPL.
I would not be able to get a Grade 2 medical to be a controller.
I understand you can go to the "Lantern test" and prove your ability on a case by case basis if you want to.
I was told in primary school (late 1970's) that I could not fly for the RAAF or Commercially. So I gave up.
Only to start in 2000 and have never looked back !! I think things have changed a lot in those 30 years.
But yes I understand I would not be able to fly in the US.
Cheers