The page in dispute about Blue has been updated with the latest info I know of. If folks know of more info on blue among the nobility or even servants, feel free to (nicely) let me know.
http://www.kimiko1.com/research-16th/CostumeMythsWS/myth24.html btw, it was last updated in 2002, about 9 years ago. Yes, my research info has improved since then, and I've new books that provide greater info since then. I've just not revisited that section of the site in that many years.