Though there is often much debate over the actual colour of the horses starring in the Silver Brumby novels, Thowra is almost most certainly a very pale palomino, or "isabella." The reference to him and his kin as being "creamies" as well as silver would help back this up. Isabella palominos can be extremely light and comparable to a true "cream" or off-white colour. In Australian horsemen's language, "creamy" is a word used to refer to a palomino of any of the mid to lighter shades of this dilution. The final clue is that a sire who is chestnut, combined with a palomino mother, is the perfect genetic recipe for palomino offspring since palomino is the presence of the cream gene over a chestnut base. Thowra would inherit the potential for chestnut from both his father and mother. And his mother would provide the one creme gene he would need to share her own colour. The fact that Yarraman is described as a light chestnut makes an "Isabella", (or pale palomino) foal even more likely. It could be argued that some of Thowra's own offspring with Golden (most certainly also a palomino) might be cremello (double-dilute creme and even more pale, with pink skin and blue eyes), but Thowra himself could only really be a palomino.