If your having any issues with the screen brightness... your not looking at it right.
Press hard on your temples with palms of both hands while squinting. Then you'll see properly. Apple's new Retinal Nerve Display is beyond awesome!
Also no wonder your having wireless problems! Your certainly not holding it right in any of those pictures.
Only hold it with your thumb on the bottom right corner & middle finger on top left corner. Signal will be 100%! Two out of two bars!
The color is Cafe Latte™ by the way. Cardboard brown is entirely different.