Since I was too lazy to type it in on the thing itself:
Eyes - can be blank or any color - up to whatever looks best/artistic liberty, etc
Middle left toe - white - optional
Forearms a bit darker than rest of body - optional
Long fluffy fur on chest and neck
Long silky fur on upper arms (lol, yes, totally different) - optional
Pads on palms - optional
Colors - placement generally as shown; as long as it's some sort of grayish-brown, that's fine - up to artists' interpretation