The linguistic delay in developing descriptors of blue may be associated with this relative dearth of blues in the natural world. I still have a tough time swallowing this one though. Zeus’s domain, the sky, can be blue, as can Poseidon’s. But wouldn’t it be helpful to discern a calm blue sky from the roiling tumult of a dark gray curtain of clouds? Or wouldn’t it be nice to say, wait until the fruits have shifted from green to blue before harvesting. There are also edible fish and some marine mammals that are blue. Less culturally significant, but still aesthetically pleasing would be to describe the blue flanking a mature baboon, the feathers of jays, bluebirds, herons, indigo buntings, swallows, kingfishers, etc., the wings of some butterflies and the bodies of some dragonflies. I’ve come across blue beetles, blue amphibians, and blue seashells. My bruises turn blue, I have blue eyes, and I’ve made small clay pots from hydric soils that are bluish. It’s hard to imagine a world without words to describe these many prominent blues in the natural world. But again, it’s not that words for blue didn’t exist in the world’s lexicons of antiquity, just that they were late to the scene and not as culturally important since they couldn’t be produced as easily.