This cheerful coloring page features four adorable turtles wearing various colored masks and carrying different weapons. Two of the turtles have their arms crossed as if they are ready to meet any malicious threats. You could color the turtles a bright lime green as the base and perform a gradient effect for the masks. To add contrast, you could use warm colors for the masks: dark yellow, orange, and red. To bring the page to life, color the weapons and the turtles' shells with metallic colors. Additionally, you could add highlights to the turtles' masks and shell using white to create dimension and make the coloring page even more fun.