Answer:
The more there is the less you see.
I am black, white, and read all over. What am I?
I am always in front of you but you will never see me
I fly yet I have no wings. I cry yet I have no eyes. Darkness follows me. Lower light I never see.
When you stop and look you can always see me. If you try to touch you cannot feel me. I cannot move but as you near me I will move away from you.
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.