Star League Fleet

Vessels received a hull pattern (usually a combination of light and dark gray and one other color) unique to their world of construction.  In addition, a heraldric shield design unique to each ship was unveiled during the launch ceremony.  Over time this would be ammended to commemorate acts of courage, honor and scarifice.  Long-serving ships proudly carried beuatiful and intricate shields, though few would ever earn the coveted golden sunburst of a Martial Olympiad winner.

Although ships provided by the member states of the reformed Star League display the Cameron Star, they retain their original colors.

Per AeroTech 2: Revised, WarShip Fleet Color Schemes

Other references: