Yeah the ones they get at 'Petsmart' are very small, infact they are probably just old enough to have shed once. Anyway the Blue color that ou mentioned is called lilac on Leopards and the coloring will change it always does. When they are little they are black and yallow striped on the body and black and white on the tail
than as they start getting older the become more spotted. Ernie and Gidget have alot of lilac on them but it's hard to see in the pics, but it's concentrated mainly between their eyes.