Good Riddles

Question: It smells like blue paint,
pours like green paint,
and it looks like a red truck.

What is it?

Question: I stand in one place yet I fill a whole room.
I can be filled with molten rock and come in every hue.

What am I?

Question: Is an older one-hundred dollar bill worth more than a newer one?

Question: You are surrounded by a 100 foot wide and 100 foot deep moat. You have a 40 foot tall ladder, matches, a gallon of water, and as much rope as you need.

How can you get across the moat?

Question: When angry it turns red, cold it turns blue and pale when scared.