Light is obviously quite important in the occurence of color. How important exactly can now be assessed through the billions of snapshots that have been uploaded onto the web. Many of those snapshots are from the same landmarks, such as the Taj Mahal in India. Waht would happen if you place a number of these snapshots next to eachother? What does it do to the appearence of the Taj Mahal?
I searched the popular photo site flickr.com for pictures of the Taj Mahal. It didn't took much effort to find thousands of them. That made it easy to identify several hundreds of snapshots of the exact same view. Here's a series of 6. You can tell by the shadows that I assembled them to represent different times during the day, from early in the morning till late in the evening.