"All you people look alike to me."

I was remembering that line from a movie said by a human of one color to another of a different color. And it struck me that in the Frontier that humans would have the same experience with dralasites and vrusk. Dralasites with their ability to smell pheromones would have no trouble recognizing individuals despite their black and white vision. Yazirians would have similar experience to humans though they might be better at recognizing Drals at least as they might have an edge with the ability to smell over humans. Vrusk should probably have the least trouble recognizing people due to a combination of their eye structure and the comprehension ability giving them the ability to spot small details.