I doubt seriously, the horse pictured is a Drum. A Drum would look different.
"Cob" has long been used to describe a heavy type riding horse. However, Welsh Cobs and Gypsy Cobs/Horses/Vanners are a 'breed'. I doubt that this horse is registered with the Vanner registry. Very few breeders in the UK register with that or other US registries.
Coloured cobs are very common in the UK and many of them originate from Ireland. A Welsh cob is also known as a 'Section D' ie, it is the largest of the welsh breeds. Section D's are not so feathered as this and I've never seen a coloured one.