I found colors on the track at school. The colors that I found were man made, it was a crushed Mountain Dew can on the grey concrete near the track. This green can would be a secondary color, and I'd say that there was a green color scheme of the photo. To enhance the color in the photo, I took the picture so the can was in focus while the background wasn't. In order to keep only the can in focus, I had to lower the aperture.