The Korat's colour is actually a silver blue that looks like it is shimmering. The people of Thailand call the colour "rain-cloud gray," and the shimmer "sea foam." This cat has one coat of fur that is short. The roots of the fur are a lighter silver blue. The colour along the fur increases to deeper blue and the tips are silver, especially on the muzzle and toes. This is the only colour allowed for a Korat. The eyes are large and peridot green in an adult cat. Kittens have amber or golden-green eyes which gradually change as they become adults, at two to four years. 