If I had to guess, the brown one is probably meant to be a Jersey. Holsteins and jerseys are typically the two well known breeds for milk, and for good reason. Holstein is generally considered the milk quantity queen and the jersey is generally considered the milk quality queen (for the amount of cream content, but everyone has their own favorite breed they will espouse for so I am not going to die on the quality hill). However, like chickens, colors overlap. A lot. Especially with all the production (beef or dairy) hybrids.
As for llamas, I haven't encountered that many personally. Where I live it would most likely be a guard animal, but I tend to see donkeys instead. So I really am not too familiar with which are preferred for fiber farming.