Thank you for replying Barbi.
I am referring to the rich dark chocolate brown, the colour of dark drinking chocolate. Blue, nowadays at least, seems to refer to a lighter more gun metally shade of brown. However, just to confuse things I remember that, back in the l960s, a breeder in Dunoon, Scotland, Mrs. Mooney had blues which were real blues, in other words, more of a Dane blue. Over to you. J.