Answer:
I can be winding and I can be straight. I can be smooth and I can be rough. Sometimes both. I start out black but fade to brown. My favorite colors are yellow and white and I love stripes and dashed lines.
I am the beginning of eternity the end of time and space the beginning of every end the end of every place.
I have hands but cannot clap
You use me between your head and your toes the more I work the thinner I grow.
My first is in fish but no in snail. My second is in rabbit but not in tail. My third is in up but not in down. My fourth is in tiara but not in crown. My fifth is in tree you plainly see. My whole a food for you and me.
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.