He cannot be dun as his sire is not dun either (sire is Connemara, dun DOES NOT EXIST in connemara ponies) and his dam, being a TB, will not have it either. I have seen cream TB's and roan TB's, even frame overo TB's, but NEVER a dun TB.
Buzzby is DEFINITELY roan - you can tell by the white and silver hairs on his body, that completely leave his head and legs alone. Dun has no white or silver hairs, it is just a lighter coat on the body than head and legs.
The above horse is the closest thing I can find on google to Buzzby. It is a sooty buckskin roan, although I'm not sure what's going on with those dark patches (which obviously Buzzy does not have)
The above horse is grulla/grullo. THERE IS NO SIMILARITY with the OP's horse. AT ALL. Not to mention, there is NO POSSIBILITY of dun, as it is not accepted in Connemaras and as far as I know, non-existent in Thoroughbreds.
*blush* I am not amazing at colours, I just love to learn about them, but thanks
Yea when I have a color question I pray you find my thread. I also compare my thought on your answer what I ;love about you is the way you give the reasoning's why you find the horse to be the color you see.
I'm not saying Chiillaa is wrong, in fact that has got to be the closest description of his colour i've ever come across, But being the UK we are somewhat behind with our colours and if I told someone who asked what colour he is 'brown based buckskin roan' I would either be laughed at or told there was no such colour, To answer Chiillaa's question no he doesn't have a dorsel stripe which is why I have always questioned his Dunness and I also thought that Connemara's could not be Dun as they are not recognised n the breed standard? Could he possibly be Gruallo? (sp)
Looks like my Dusty he has always been labeled a dun because he has a dorsal stripe and some bar markings on his leg but he changes color from a light buckskin to a sooty one kinda like people with hazel eyes but he doenst have any roaning going on.