It was dusk. There was absolutely no sun shine around. The sky outside the window looked a beautiful deep blue. Prussian blue when used without diluting the colour. But the trunk and the branches of a tree outside appeared a dull white.
After about half hour, the tone was more intense and splendid. Extremely pleasing to the eyes, and one would want to step into it right away. And only a silhouette of the tree could be discerned.