With all due respect, you're one individual and basic color terms for a language are not determined by a single individual. If you look at usage via proxies like Google ngrams[1] or Google trends[2], cyan barely registers, which suggests it hasn't really shifted to a basic color term.
[1] https://books.google.com/ngrams/graph?content=black%2Cwhite%...
[2] https://trends.google.com/explore?q=Red%2Cgreen%2Cyellow%2Cb...