As a Fine Artist, I 'd like to mention / recommend people look close at the clouds to really see the colors in them! Your LEFT brain wants to tell you the sky is "blue" however I can tell you that if you look more closely, you will see very subtle shades of yellow, pink, greens, violets, et al. ! Especially depending upon the time of day & weather. Get "Out of the box" & observe what's REALLY out in nature!