Well, I also know that white and blue porcelain was coloured using cobalt blue by chinese artists in the 8th century
Cause blue is a compound word,the chinese artist used the  cobalt blue to colour fine blue and white porcelain
I love the bright blue skies of summer. It's my favorite color That is nice to know. Do you also like the musical comedy film called Blue skies? It is from 1946 I never heard of it. What else do you know about the color blue?
In the eighth century Chinese artists used cobalt blue to colour fine blue and white porcelain.