Some yellow toward the bottom is normal. Just breaking that information to you. It seems to be more pertinent with the 2012 models. It shouldn't be outrageous amounts of yellow, but a "little" is normal.
I hate to say that, since it shouldn't be the norm, but alas... it is.
Also, you don't have bleed in the corners. Bleed is when part of the light is shining through the actual panel edges. What you have is viewing angle deficiencies, which IPS panels have. Sit right in front of that "bleed" and you'll see it disappear completely. If it were bleed, it wouldn't disappear.
e.g. this is NOT bleed.:
Image
e.g. this IS Bleed:
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