This coloring page features Shrek drinking a bright green and lumpy potion from a small glass bottle. His expression is one of disgust, with a scrunched up face and a drop of sweat on his forehead as he attempts to get it all down. To color this page, I would suggest making the potion a bright and vibrant green, while shading around it to give it a lighter and lumpier look. For Shrek himself, I would use a range of green hues to give him a detailed, life-like look. Add a blue-ish tinge to the sweat on his forehead to really bring it to life. To give his face that displeased expression, you could use a yellow tone shadowed with darker colors where needed. Finish it all off with a bright shade of orange for the bottle, and you have a great way to complete this unique coloring page.