What, he sees infra-red?
That'd be cool but possibly impractical...
Nice! That's pretty amazing.
It is an interesting thought though, we learn our colours by association - the sky is blue, the grass is green, the orange is - uh - orange. If we have a skew in our colour perception and the grass looks orange, who's to say you're not actually just seeing a green orange, and the grass is still green for you. Maybe your leaves are orange! Uh!
Hence this might be why people would also look 'green' to you, as we're just a very pale orange colour, innit?
Oh, I have a headache...