Good Riddles

Question: I have every color, but no gold.

What am I?

Question: A man travels by wagon,
brings joy each evening,
but depression by the morning.

Who is he?

Question:

Take me for a spin and I'll make you cool,
but use me when it's cool and you're a fool.

What am I?

Question: I attach to your hip and I sing all day.
All I want to do is play.

Question: How can you make 7 even?