Sadly it appears that they have been discontinued, Raggot. Such a shame but they probably weren't popular in the US or they wanted the colour for some other line.
I've had running conversations/debates with both SA and Cortland over the past few years regarding some of their lines and tbh they're only really interested in the US market and floaters in particular. Anything else is secondary and the discontinuing of lines or the thoughtless tinkering of sink profile and colour is part of their 'all eggs in one basket' approach to market share. Or so it seems to this particularly disillusioned individual.
You're best to do a google search and see if you can find any old stock. Either that or try an ebay search. Sorry I can't be of more help.