After having white aluminum in a past house, I would never have it again. Unless you like cleaning!!

My neighbors dark painted roof tiles have now worn so it’s a patchy mess of black and whitish grey so I think it a waste of time unless you want to sell As for colours, climate change means we must have light coloured roofs else increase suburban heat island effect and drain power for cooling it costs more to cool than heat a house Your colours will look striking but unfortunately they’re not not practical (heat or dirt wise) or environmentally friendly so depends how you view the debate re environment v cosmetics

Personally I wouldn’t be using monument at all as I don’t like dark houses. But colours are personal, which is why it is so hard. They are also different in different light conditions and what colours are around them influence how or eyes take them in,. At moment you seem to have a blue tint to your paintwork. For a change I would be tending to a green tint which complements the red toned bricks. For the house above I would change the mounument to woodland grey. But then that is what I have on my house so I’m biased in that way. Hammer grey is a plain medium grey. So it will be fine. It is neither a feature colour nor too dark.

I’ve never seen double strengths woodland Grey so hard to comment