I agree with Sharon - the gray family is the right way to go. Make sure that they are "warm" toned grays.

I think the roof might be a bit too dark for the brick colour. The bricks and the window joinery will blend in fine. What did you decide to do?

Try a light warm gray

Have lived in places with a tiled window -- tile the sides and top as well as the ledge, so that you go right up to the caulk/frame/glass. Works to let out some steam and store shampoo too!