Originally Posted by NdAppy
Grulla is black with dun. All her markings are "dun factor", in other words her dun gene has caused her to have ear tips/rims, a dorsal stripe, lightening of her body color and leg stripes. Without the dun she would be a plain/normal black horse. Hence dun factor.
As for his coloring, the lightness. That's why I was asking for pictures/more information on the sire. There are many MANY studs that their owners swear up and down until they are blue in the face that they are blue roans when in fact they are bays or browns under the roan.
the lightness happens alot of grulla colts actually, they arent all born shades or grey or mousey color, a lot of them are born light like him then shed out to their true grulla color. And when he was born his face and eyes werent near as dark and defined as they are becoming now, once he starts to lose this first coat, his mousey color will come out more. GRULLO COLOR EXPLAINED: PHotos offered of grullo shades
Look at the third colt down on that link, light in color and shed out to mousey.. not the first example I have seen either, but its one I found to put on here for now.