Thanks
they have VERY recently been rethatched.
That
The building (the real one) I used as a Basis for the model had a dark Grey Roof..but I went for the light colour for a couple of reasons. I prefer it and if the rest of the building was to be done realistically the whole Thing would be a mass of different Grey tones, ok for an historical Diorama but not my wargames.
Some take longer to go darker than others, less air Pollution, less microbial activity, but, yep, they will all go dark eventually.
this oneīs got stuff growing on it, so not thatched VERY recently and is still light coloured