Lovely!!
Man, that is gorgeous. I almost got one that looked similar ( I dont remember if he was harlequin since I was new then and still learning, but he was like that coloring and went from yellowish to bright orange). He was a definite boy tho so I was afraid to get him right away, and the petco he was in had another sick looking cresty. But he went later before I could decide, and now I kind of regret it. I have a baby, though, who may end up looking similar

Lovely!