Unfortunately, the MHR doesn't have room enough to list all the colors on some boats. If you look at the Miss Technicolor, for example, it has 13 colors in the one paint job, not counting clear. Now, considering that the Technicolor was the 7207 Notre Dame, it had at least 10 other names and several different paint jobs. By the time you put in all the color codes and mixes needed, you could be looking at more lines of colors than registrations.
Now, look at the 0706 Oberto/Miss Madison. With it's new sponsor for the 2016 season, it would have five registration lines:
U-6 Oh Boy! Oberto
U-1 Oh Boy! Oberto
U-6 Oberto
U-1 Oberto
U-1 Home Street Bank
It also has several different colors; red, green, silver, white and black on the first two, white and blue for the Home Street