Thanks for your replies guys...interesting that we can "learn" to see colour in planets - I guess this is like seeing detail which sometimes takes 20 mins or so to pick up. If I was honest, I would say Saturn has an "appearance" of yellow in my Dob and Jupiter, well, it certainly seems more black and white than what I would term colour - I must say though that after taking a photo of it with an I-phone one night, there was a definite brown colour which I did not notice when viewing it. When I've looked at Uranus and Neptune however, I go, "ok, that's green or that's blue"; there is no question I am viewing a definite, destinct colour.
Yes, when I look at the stars you mentioned I certainly see colour as well as looking at Mars with naked eye. I think I could say Mars is yellow/orange in my scope (especially when I use a moon filter) but it is not as distinct as Uranus; as you say, this may be the relative brightness of the objects....thanks again
