The blue hue is just like the pictures posted on this thread, it spreads all around the corners of the screen, some display units show a brighter hue and others (like mine) just a dimmer kind of blue.
About the bottom part of the screen, it's all the way around the bottom, it's like a discoloration turning pink and yellow depending on the light. it makes the screen look so uneven, but since i mostly look the content on the upper part of the screen it's not so noticeable, but once i saw it i can't stop seeing it
I've uploaded a photo with reduced exposure so you can see it clearly, at the bottom edge there's a blue hue and above that you can see a yellow blotch near the "home bar", that visible blotch is around the entire bottom.