What Does White Mean?

“What color is white?” Teddy asked Daddy 

Look up at the color of the (overcast) sky. That is white answered Teddy’s favorite Daddy. 

“What does white mean?” Teddy asked Daddy 

The question confused Daddy who made up a silly answer. He didn’t buy it so “What does white mean?” Teddy again asked Daddy. 

Since green is Teddy’s favorite color Daddy asked What does green mean? 

Teddy stated the obvious  “Green means go. And red means stop.”