This actually isn't a very accurate reference for Amsterdam. He kinda changes every time I draw him. But it does give you an idea of his coloration. He's a yellow tan predominantly, with a lighter belly and rust red markings and three pairs of dark brown stripes. Very pale yellow eyes.

The facial markings aren't very defined in this image- the rust color should be a bit darker over the top of his muzzle and between his eyes. It was kinda dark in the room when I drew this. >__>

Also the stripes on his tail are in the wrong place- they should be closer to the base of his tail, rather than near the tip.

Other than that, anything goes. XD