A Grullo is a black dun But if neither the sire or the dam is dun I don't believe the foal produced can be a dun. I could be wrong but I believe that is the case. So I would say without a doubt that he is not a dunanything.

 
Life is not about how hard you hit. It is about how hard you can get hit and keep getting up.
SOS Horses
SOS Leatherworks 

sonnet78 wrote: cause I am visualizing breeding sonnet to a gypsy and well ending up with Mr Snuffleupagus as the baby and well that just ain't god damn pretty people or functional or of much use or well its basically shit  

weatherhorses wrote:  Well, slap me silly and color me tickled, those are AWESOME!