― I drew this for an Utrecht Art Supplies contest in Photoshop and colored it in Adobe Illustrator. The rules stated that the art must be in "green (or shades thereof)," so I had to use dark green instead of black for the outlines. Since green is my favorite color, this challenge was right up my alley. ∙ The second idea I had for the contest is still baking in my head and involves my other favorite subject matter: aliens. .