The C7800 prints color technical documents at 3,500 square feet an hour. Printing in color can save a substantial amount of time due to ease of identifying elements within a full color document. http://www.kipc7800color.com/ Cost of color technical documents has decreased significantly in recent years and the C7800 is no different. A 6 square foot color print with 45.2% coverage will cost $.31 per sheet or $.05 per square foot. A 3 square foot document with 21% coverage will cost $.08 per sheet or $.027 per square foot.