Sometimes you white markings, and blue (or partially blue) eyes. Sometimes just white markings. Sometimes just blue eyes. And sometimes you get no markings or eye differences at all, but it can still have the Vienna gene (and throw blue eyed, white marked kits). It's mostly random in how the Vienna gene chooses to show itself, but about 50% of the litter, on average, will have the gene, and have a chance for blue eye(s)