Answer:
I'm flat. You use me everyday. You need me to live. But you give me away everyday. I'm coloured and I have a founding father on me. What am I?
I'm not man's best friend, I'm their enemy, I can mark your end, yet you do not see me, I am very small, but very tough, If you have me, then you have it rough.
Die without me, never thank me. Walk right through me, never feel me. Always watching, never speaking. Always lurking, never seen.
What can you fold but not crease?
Different lights do make me strange, thus into different sizes I will change.
The sun bakes them, The hand breaks them, The foot treads on them, And the mouth tastes them. What are they?