Answer:
I am all around, yet to me you are half blind. Sunlight makes me invisible and difficult to find. What am I?
I am pronounced as one letter, written with three. I come in blue, black, brown, or grey. Reverse me and I read the same either way. What am I?
I am black within and red without; with four corners round about. What am I?
I have a head but never weeps. I have a bed but never sleeps. I can run but never walks. I have a bank but no money. What am I?
The more of me you take, the more I appear behind you. What am I?
I am your mother's brother's only brother in law. Who am I?