In the coloring page, Arthur stands confidently with his hand steady on the doorknob. His resolute expression shows his determination to move forward, ready for whatever awaits him beyond the door. The blue and white of his battle armor contrasts sharply with the dark shadows of the background and the bright arch of the doorway, symbolizing his readiness for the challenge ahead. To colour this image, I would use a bold palette featuring contrasting shades of blue, black, and metallic silver to bring out the drama of the image. To add to the sense of anticipation, some brighter hues of oranges and yellows could be applied to the details and lighting of the doorway.