My first questions is always what colors are the houses on the right and left of this house. What state are you in?

Dove Gray on the brick - don't go a lot darker since the roof is so light. Shutters at big window should be pulled since wainscot prevents proper proportions. Like http://www.sherwin-williams.com/homeowners/color/find-and-explore-colors/paint-colors-by-family/SW7658-gray-clouds/

Paint the trim and the eaves a mid-tone gray and paint the sashes of all the windows and the front door / screen door in a muted aqua. Trim like http://www.sherwin-williams.com/homeowners/color/find-and-explore-colors/paint-colors-by-family/SW7660-earl-grey/
Front doors / sashes of windows http://www.sherwin-williams.com/homeowners/color/find-and-explore-colors/paint-colors-by-family/SW0019-festoon-aqua/

Red brick chimney ideally should also be painted gray.

this is the kind of thing one can only do in person unless you know what the exact paint colors the siding, trim and brick are now.