We could do either really.

I did a bit more research than I was awake and able to do this morning when I suggested that idea, and can now link to both a black and white version of the map, and a colour one by Pauline Baynes, who was commissioned by Tolkien to do the map for him.

This is the black and white version, discovered with Tolkien's notes scrawled on it in Pauline Baynes's copy of Lord of the Rings

And this is the colour version she made for Tolkien.

Neither of them look very much like the maps that Callum did.

I think I must be missing something in my understanding here... *look of puzzlement*

Maybe the map is just such a total legend these days that what it looks like to each of us depends largely on which of the many thousands of posters of Middle Earth we happen to like most, or have seen most frequently in our lives.