A couple of other things - The roof will be replaced with a very light grey in January, and the front door is mahogany - How should I do the door trim if the house is painted white? Thanks.

search on discussions on Houzz. There are a million thoughts with good advice on exterior whites.

I was thinking shingle roof when I mentioned the mix of light colors. While a shingle roof would have multiple shades of gray, metal roofs would be, as far as I know, one solid color -- some light colors and some dark. If you have decided on a metal roof -- great idea -- then, see if you can find white metal roofs in your area and see if they look good on the roof to you. Personally, I'd rather have the house painted white and then choose a light colored roof -- a light gray or tan (but not a white roof) ... especially if there are any trees anywhere near the house. Some trees are worse than others for dropping sap and some show bird poop and such worse than others -- things that would actually wash off a metal roof in the rain better than they'd wash off a shingle roof. If, however, you like the white roof that much better, you could always take a hose pipe to rinse off anything that shows enough to bother you. While there are light green an light blue modern metal roofs as well as the light gray ones -- and medium and dark gray roofs. Either white or gray would be more neutral should you ever want to change your house color again or sell the house to someone that might. Consider taking the time to actively look for a few in your area and see how they look once they've been installed for a while. Perhaps they don't show stain as much as I suspect they would. Perhaps the local Lowes or Home Depot could give you the general location of some where people that bought white metal for the roof and had them installed.

Hale Navy has a lot of grey Compare to the two you mentioned. Given the soft tones of your home though, I’d be heading towards a creamy grey based blue and not a primary feel (see below) or it will be a jarring contrast; complementing home would be my first priority. Suggest lining up chips with different undertones and first decide on that, then narrow down to a few colors in that category. That’s when you bring home samples. With your home, I really like these and a hint of green in last one would really work well with your home.