I like the color in the rendering for the wood. I would also do the shutters. Such a very nice design for a home.

Here an image of a contemporary home with an even darker trim color.

NO SHUTTERS If those are the choices I would do wenge to keep it as dark as possible and a brown is always dictating other colors to use even for accents like planters

Thank you. We finally decided to do it like these (the gray will be darker):