Is there such a thing as color?

There are certain properties which make objects reflect certain parts of light that make us see colors. An apple reflects red light and thus the apple appears red. The apple's properties do not change just because the light is turned out. Perhaps the properties that make light reflect a certain way are the colors, just not always revealed. This apple is always red, but under a black-light or no light our ability to see the red is hampered.
If we use the truth as correspondence theory we can surmise that the apple is red and that it has scientific properties that allows us to see it as red. A desk is determined to be wood because it looks like wood, feels like wood and possesses the chemical properties of wood. So if we stop observing the desk we still retain the knowledge that it's chemical structure is wood. If we stop observing the red apple we remember that it has the microscopic properties that make it red.