This scene is a grim reminder of the importance of keeping our environment clean. Featuring an overflowing river of trash, it's the perfect coloring page for anyone trying to encourage environmental awareness. Consider adding a vibrant blue background to contrast with the messy colors of the debris and waste, to drive home the message of pollution. For the river of trash, try multi-colored shades of brown, grey, black, and yellow to create more of a popping effect. Other details like a rainbow bridge of garbage, ghostly gray and green trees, and a tall brown mountain of rubbish enhance the message of the page. Color the river of waste with a mix of cool colors; maybe blues, purples, and teals. Finally, don't forget to add a pop of bright colors here and there, like a green plant trying to find fertile soil or a rainbow of colors exploding from a volcano of garbage. With this page, you can create a striking illustration of how pollution and garbage affects our ecosystem.