Spongebob is a classic character beloved by children of all ages. He is a cheerful, yellow sea sponge that lives in a pineapple under the sea, is an enthusiastic fry cook at the Krusty Krab, and loves to play the clarinet and take part in the exciting sport of jellyfishing. Spongebob himself is mostly yellow, and so should be the primary color when coloring him. For his shoes and shirt, you could go with a bright blue and red--respectively. Gary, his pet snail, could be colored a deep teal, and his pineapple a vibrant green. The ocean in which Spongebob lives might be shaded with different hues of blue, depending on the time of day, to give the scene an extra dose of realism. Finally, you could throw in some light yellows, purples, and oranges to replicate the colorful bubbles that Spongebob loves to blow. Get creative and have fun!