Best riddles

What is blue, green, yellow, purple, brown, black, and grey?

What do you call a cow in a earthquake?

Take me for a spin and I'll make you cool, but use me in the winter and you're fool. What am I?

What has everything inside it? Everything you can imagine...even God, the wind, the world, the sky, heaven, earth and everything that comes to your mind.

I am full of holes but I can still hold water. What am I?

I live in every part of your body and all commodities are transacted through me! I appear the same, but different!

What gets shorter when you close your arm?

An iron horse with a flaxen tail. The faster the horse runs, the shorter his tail becomes. What is it?

What has 4 wheels and flies?

You are a bus driver. The bus starts out empty. At the first stop 4 people get on. At the second stop, 8 people get on and 3 get off. At the third stop, 2 people get off and 4 get on. The question is, what color are the bus driver's eyes?