Contrasts In Cloud Color

As a thunderstorm moved in a SW-to-NE direction west of this position at Noelridge Christian Church in Cedar Rapids, Iowa around 8:34 PM, Friday, May 25, 2012, it began to cover up the setting sun. Dark bluish-gray clouds at left from the more concentrated areas of the storm contrasted greatly with the yellowish areas of the right side of the image--the leading edge of the storm cell.