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.