The crossword solution for the term 'COLORFUL CEREAL BRAND' is Trix. Trix is a brand of breakfast cereal made by General Mills, first introduced in 1954. It is a sweetened puffed wheat cereal, shaped into small 'S' shapes, and is available in a variety of colors. The cereal is well-known for its advertising campaigns featuring the Trix Rabbit, who is constantly trying to steal the cereal from children.