Part of it is brown was introduced a few years later than white or black. So there were already more black and white, when the first brown was introduced.kibosh wrote:Why are brown horses so rare I wonder?
Then it was rare for a set to have two or more of the same colored horse (and I can't think of a set that came only with a brown one), so for each brown that was available, it came with at least one black or white.
Steve