What's red, white and blue at Christmas?

This joke plays on the traditional colors of a candy cane and the expression of emotions through colors. Typically, candy canes are red and white, representing the colors often associated with Christmas. However, the joke introduces an additional color, blue, which is commonly used to symbolize sadness or feeling “blue.” By adding the color blue to the red and white of a candy cane, the joke humorously suggests that the candy cane is sad, as if it has taken on a blue hue to reflect its emotions.