Having a Blast
It's lovely.. funny you should mention that phrase. I learned it differently when I was in high school, my art teacher said "blue and green should never be seen except together in a washing machine." So I asked him about the sky and the trees and the water and the grass, he was lost for words. I think if he saw your lovely bookmark he might be speechless again.
Ha, very good.
And the ocean too is blue and green!
Fabulous color choices!!! :)