This coloring page captures the powerful bond between Hiro and his brother Tadashi, the two protagonists of Big Hero 6. Hiro is donning a blue and red suit and a black mask that covers his eyes, while Tadashi is wearing a white lab coat over a red shirt. With a determined expression on their faces, Hiro and Tadashi stand in anticipation, as if ready to accomplish something great. To bring this scene to life, you could use bright, vibrant colors to create a sense of energy and enthusiasm. On Hiro's suit, you could use a blend of magenta, blues, and reds, with yellows for his mask to give him a fierce, determined presence. To add a more subtle and softer touch, muted yellows and greens on Tadashi's lab coat would add to the effect of his more compassionate, nurturing presence.