Some colors exist in dreams that are not present in the waking spectrum.
Colors are the smiles of nature.
Wherever you go, the sky is the same color.
All colors are the friends of their neighbors and the lovers of their opposites.
I often think that the night is more alive and more richly colored than the day.
—Vincent Van Gogh
With a stop light, green means 'go' and yellow means 'slow down'. With a banana, however, it is quite the opposite. Yellow means 'go', green means 'whoa, slow down', and red means 'where the heck did you get that banana?