I suspect it is like the mocca that is available in Poland and not offered in the UK Alan. I have a beige/black Intens and considered getting the brown. It is a nice colour...but it really changes with the type of light that prevails. A bit like the Arizona orange which is stunning in sunlight but more of a burnt orange when dull. I have to admit I liked the brown in sunlight and as illustrated in the catalogue, but was less keen on it in dull weather. I went with the beige/stone and am really happy with it.
Have a look at the gallery at the Intens there!
Hope this helps!