Colour-Blind

You look at me, see my beauty, but the colours look different to me, the sun is wearing bright yellow for you but I see bloody colour. You tried to change me, mark me, but I've never asked. My world is different for you, but my sight never failed me. My shades have ordinary meaning, but looking at your eyes, they are not green, no, they're silver to me. I'm not blind, I just have a special sight.