The ABCD groups were tested outdoors, and the experimental site was the Sustainable Environment and Building Laboratory at MingDao University in Taiwan. The groups were tested from September 25, 2012 to November 5, 2012. The test bricks were placed on an outdoor cement floor, observed hourly from 5:00 a.m. to 10:00 p.m., and measured by color analyzer. The color analyzer was affixed to the brick surface for five times of rapid measurement, and the average value was taken. The rate of change in the RGB of the various groups was analyzed