Walden Pond, Massachusetts
... Walden is blue at one time and green at another... Lying between the earth and the heavens, it partakes of the color of both. Viewed from a hilltop it reflects the color of the sky; but near at hand it is of a yellowish tint next the shore where you can see the sand, then a light green, which gradually deepens to a uniform dark green... In some lights, viewed even from a hilltop, it is of a vivid green next the shore. Some have referred this to the reflection of the verdure... and it may be simply the result of prevailing blue mixed with the yellow of the sand. Such is the color of its iris...
HENRY D. THOREAU, Walden
