The three pigs are gathered in front of a house made of branches that has been completely destroyed. They appear to be distressed, looking like they have experienced a huge loss. To capture their emotion, try using warm colors such as burnt orange, yellow, and other tones that evoke sadness. The house could be covered in lighter tones of brown and tans to imply destruction. The pigs themselves could be more vivid in color, such as pink and white, to describe their innocence that was lost in the destruction. For a more realistic effect, you could use light blue and green for the sky in the background. In short, choose colors that bring out a feeling of distress, but don't forget to maintain the vividness of the pigs.