Can't quite remember at the moment, but of Uranus and Neptune....one is greenish blue and the other is bluish green...or was that vice versa. Even when I had my 8" Newt, I could make out very feint colours in both planets from my suburban backyard....but if someone just casually looked they may not have noticed the colour. Mercury should also have a very slight reddish tone...
Usually a lack of colour is one of the things that beginners are disapointed about...so was I.
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