@Paulie-W posted a snap on Wednesday last week of some old boots. I've gotta admit I was pretty damned impressed with the overall presentation so I asked him what it actually was. It turned out that the presentation was Colour, A Gradient Map, and some Toning all mashed together (his words).
Now "Colour & Toning" I can do without problem but every time I've clicked on "Gradient Map" my snaps have gone just three colours (which apparently that's what should happen) and I've mumbled all sorts of things to myself and decided to do something else instead, in reality I hadn't a clue as to what was going on. But since then I've managed to find a few "YouTube" vid's on "Gradient Maps" and things are a little clearer now. I've not tried to do one just yet but hope to find the time in my busy non existent lifestyle at the moment.
So many thanks Paul for your help, much appreciated mate.