I'd argue that demonstrates that practicing distinguishing colors is learned. Some people practice distinguishing colors because their culture tends to to so, such as people who speak Russian. For others, they learn to do it by practicing visual design. Other people just pick it up over time. I mean, after all English has words for "teal" and "turquoise". So it's just a subjective matter of what's common.

This isn't evidence, for example, that language determines or enhances your ability to distinguish color.