Crazy Rainbow

It seems that there might be a misunderstanding. There is no food named "crazy rainbow" that is commonly found in restaurants in the USA. However, there is a dish called "Rainbow Roll" which is a popular type of sushi. The Rainbow Roll is made up of a California roll (which typically contains imitation crab, avocado, and cucumber) that is topped with thin slices of various raw fish, such as salmon, tuna, and yellowtail. The variety of fish on top gives the roll a multicolored appearance, resembling a rainbow. It is a visually appealing and popular dish at many sushi restaurants across the USA.