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'm sometimes white but most often I'm black. I take you there but never bring you back.
Four fingers and a thumb, yet flesh and blood I have none. What am I?
In buckles or lace, I help set the pace. The farther you go, the thinner I grow. What am I?
I go up when the rain comes down. What am I?
What is always coming but never arrives?