Is calico hair rare for humans because I have it?

Calico (in British usage, 1505,[1] AmE "muslin") is a plain-woven textile made from unbleached and often not fully processed cotton. It may contain unseparated husk parts, for example. The fabric is less coarse and thick than canvas or denim, but it is still very cheap owing to its unfinished and undyed appearance.
en.wikipedia.org/wiki/Calico

In a cat, the word signifies a combination of black, white, and orange fur.

So what are you talking about?