This coloring page presents a big and small bear standing on their hind legs side by side. The bigger bear is a dark brown color, with his mouth open and his tongue hanging out. The smaller bear is a light brown, with a darker patch on his chest, and his mouth open as if he's looking at the bigger one. To emphasize the differences between the two bears, I would color the bigger one a much darker brown, and the smaller one a brighter, lighter brown with a darker patch. The sky in the background should be a bright blue, with wispy white clouds. The grass can be a lighter green with subtle yellow and brown highlights. I would add a few red wildflowers around the bears to bring some color and life to the picture. Finally, to give the scene depth, I would add some depth in the midground with a darker green and in the background with a darker blue.