We need to paint a small two-story rental cottage that we have on our property (well, soon-to-be ours...we are in contract). In the picture it is the far left building. The building on the right is the main house (farmhouse from 1850 that has siding so we don't think we'll be changing the color any time soon), and in the middle is a workshop.

What I would like to accomplish is to:
- Have it blend into its surroundings. I don't like the bright white that draws your attention away from all of the lovely green around it. Behind it is a view of a "mountain" (on the west coast it would be called a hill). I want the focus to be the nature that surrounds it.
- Visually separate it from the workshop and main house.

My initial thought was to paint it all in a dark gray/blue, almost black, and do a bright red door. But then I thought of the following:
- I realized it had a brown roof. It seems like all of the houses that I see in the dark gray exterior also have a grayish roof. Would the effect be lost with this color roof? (It's not in the budget to redo the roof).
- The main house is a pale yellow with blue trim (it is a possibility that we could paint the trim soon and do a color change), and the workshop is white. Would it look too "hodge-podgey" to have each of the three buildings a different color? Should we instead shoot for uniting the three buildings color-wise? I go back and forth between thinking that the rental cottage should be treated totally separately to thinking that it should be considered a part of the "estate".

This is in the Hudson Valley area.

Thanks!