Felly sgrifennodd Jon O'Rourke :
I veered away from C as I found the blue shades a bit too similar and
suggested B as most useful with D being the one I'd prefer to see on the
site. All very subjective though.

I've gone for D as most useful and the one I want to see. A is
obviously the easiest to understand, as it gives the least information.
As I said in the comments, I really wouldn't want to see A used instead
of one of the others.

C just has too much blue on it. If they coloured it instead in some way,
as for D, then I'd have a job choosing between the two.

Adrian

--
Adrian Shaw ais@
Adran Cyfrifiadureg, Prifysgol Cymru, aber.
Aberystwyth, Ceredigion, Cymru ac.
http://users.aber.ac.uk/ais/weather/ uk