personally i think greens the worse colour you could paint it, i've done a few green exterior's in the last few years and all where done 2 years previously which is nothing for an outside but algae and moss was starting to grow all up the walls and it looked f**kin awful, i know the masonry they used had antifungicidal in it and that did nothing to stop it, what made it worse ws they wanted it changing to a light cream colour which took four coats to cover the green so bear that in mind, i've just done my outside this week, stayed with the same colours, black and white and its amazin the diffe