Generally guys are noticing less number of colours than girls..
like they don't see a difference between peach and salmon (as a color and not as food)
plus the total-colorblindness is caused by a recessive gen on the chromosome X so it is more possible to guy to have it thn aa girst since girl must have to have both parent with it..and in the guy case it means that most probably his grandfather on the mother's side was so 😖mart:
and i agee that it wouldn't affect his job ✅