Watusi are registered in multiple percentages from half blood up to foundation pure. This example from Will Ross of Ross Ranch Horns shows off one of his newest 1/2 blood heifers out of one of his longhorn cows and the foundation pure Watusi bull BWS Captain Butler. Will calls his babies Long-tusi. If you like color, percentage may be the way to go.
Contact Will Ross by email here or by visiting his website here.