I was thinking about this question and answer about how cephalopods might develop a language, in this case a visual one.
How would linguistics term a language that is communicated visually as a cycling of colors?
For example, this video shows a cuttlefish using a rapid cycling of skin color to aid it in capturing it's prey.
Now let's say cuttlefish began to use their color changing ability to develop a language based on frequency of skin color change. What kind of language would that be? What would linguists call it?