Oh, that's interesting! I saw an ad on a website for a blagdon pony and he was a dark chestnut (sort of rusty brownish red), but there was no other breed mentioned, so I wondered whether it was his colour or type.
A blagdon is normally a roan with sabino markings - hence the jagged white socks, blaze and belly splashs.
A normally coloured that is grey and white (often called blue and white) is not a blagdon roan as its not roan!. Its a tobiano that is greying out.
We had a Clydesdale mare the was bay roan and white and she was described as a red blagdon. I believe there are blue blagdons (blue roan and white) and even pink blagdon which seems to be strawberry roan and white.
Blagdon is mosr commonly found in a Clydesdale-
usally socks, blaze and a belly splash on top of a bay or chestnut coat base.
Often with roaning in the coat.
A lot fo cob types will have some eavy hrose in thier ancestry, so show the Blagdon colouring
I found this:
Blagdon grey, White Blagdon, Sabino White Technically, and genetically, Blagdon Grey is not a grey at all. He's white (and was born that way) with a few speckly or blotchy patches of colour, or collections of spots, frequently on the legs and/or head and ears. Skin is predominantly pink but may be freckled. Manes and tails may be interestingly striped! The colour is named after the gypsy stronghold area of Blagdon, in Somerset, England, and the best examples of this colour (and also "Blagdon", see below) are found in the gypsy cobs. "White Blagdon" is caused almost certainly by a homozygous inheritance of the Sabino 1 gene (a local pattern genetic code), and is thus also called Sabino White. It has nothing to do with the greying gene.
ooh, and this:
Blagdon Any 'base colour' or roan based on any base colour, with multiple spots and splashes of white, and / or roan, and / or base colour (red on the 'red Blagdons' and black on the 'blue Blagdons'.) The white is often quite extensive around the belly and upper legs, and almost always accompanied by white on the face, often including the chin. One or both eyes may well be blue. Odd white spots may appear within 'whole colour' on the knees. The most spectacularly marked of the Blagdons are probably due to a combination of a number of different 'white marking' genetic codes, and possibly, in some cases, the inclusion of the (appaloosa) leopard complex gene. The Blagdons, as the Blagdon greys, show typical Sabino gene (a local pattern genetic code) patterns. To see the typical Sabino pattern unmodified by other patterns, look at a Clydesdale horse.