Color plays an integral part in the recognition of brands. Think of Pepsi and Coke, for example—two massive competitors in the soft-drinks market. One uses blue; the other, red.
Bleed is a printing term that is used to describe a document which has images or elements that touch the edge of the page, extending beyond the trim edge and leaving no white margin. When a document has bleed, it must be printed on a larger sheet of paper and then trimed down.