these particular tiles were custom made from a source in juarez mexico, the colors are improtant to the style/period/region of architecture. the versions at big box store are production tiles lacking the artistry/detail as they are often printed in mass production. http://www.houzz.com/pro/calpot/california-pottery-and-tile-works produces a nice product
patrinkac
Saiqa Talpur
Sterling-Huddleson Architecture