Answer:
What relies on columns but isn't a house, and asks for help but can't speak itself?
A time when they're green. A time when they're brown. But both of these times, cause me to frown. But just in between, for a very short while. They're perfect and yellow. And cause me to smile.
What is that over the head and under the hat?
If you break me, I do not stop working. If you touch me, I may be snared. If you lose me, nothing will matter.
There are two meanings to me. With one I may need to be broken, with the other I hold on. My favorite characteristic is my charming dimple.
I'm the source of all emotion but I'm caged in a white prison.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?