What color were dinosaurs?

Palaeontologists working in northeast China have pulled a type of pigment cell (called melanosome) from the fossils of a set of dinosaur feathers, which for the first time, give researches an indication of dinosaur hue:

The team discovered two types of melanosome buried within the structure of the fossil feathers: sausage-shaped organelles called eumelanosomes that are seen today in the black stripes of zebras and the black masks of cardinal birds, and spherical organelles called phaeomelanosomes, which make and store the pigment that creates the rusty reds of red-tailed hawks and red human hair.

The color also leads scientists to believe that the dinosaur feathers were also used primarily for display (instead of flight).