Comparison table of Color temperature
the light color& their whites appear too bluish , the color temperature is getting more and more low. in a day ,the color temperaturetend to gain depth of color with time increased:

* The sunrise at the light color was yellow ,
color temperature as 3，000K；
* The noon Sunshine was white . color temperature in      4，800-5，800K；
* But the color temperature was 6，500K in the cloudy noon；
*The light color was crimson before sundown and  the  color    temperature had been reduced to 2200K