SunSet'!

This painting by Frederic Church shows how a subtle change in value can make water seem like "water." Look at the colors in the lower sky just below the clouds. Now, look at the water. See how the water is ever so slightly darker and more dull? Colors get a bit more dull as you will also see in this next example. Also, look at the gray-blue reflections in the water under the mountain. You will find that water can reflect multiple parts of the sky