Wait till your in a dark room tonight turn the lights off and put a black image on the screen then see if you still think the screen is fine. I thought mine was bleed free until I stood in a cupboard in complete darkness. I am also going to wait a few days to see how much it bothers me but with apple there should be no problem swaping it out next month or even in 6 month for a bleed free brown box model. I'm guessing they know about the problem and will fix it in time.
Forgive me, but standing in the cupboard looking at a solid black image in the pitch dark is not a normal use case scenario.
It's like testing the volume by turning it to one bar and standing underneath a running jet engine with your fingers in your ears to see if you can hear your MP3 of crickets chirping.