In the coloring page, there is an imposing figure wearing a black cloak and wielding a menacing sword in his hand. His expression radiates authority, leaving no doubt he is an evil uncle to the Ninja Turtles. The darkness of the background only serves to further emphasize his sinister presence. The illustration allows for much creativity in how it can be colored. To make the man stand out against the darkness of the backdrop, you could use bright, bold colors for his outfit, such as oranges and reds, and give his face a violet hue. For added contrast and drama, his sword could be colored a metallic silver or gold. The background can be filled with shades of gray or black in order to really highlight the the figure and his features.