I think it's more important to find a color that goes best with the brick, if it has to be a choice. Having the cement color look like cement is fine...and not necessary to have it match as much. I would also match downspouts and soffit to the siding...I wouldn't want the downspouts standing out as if they were trim. Instead I consider them a 'necessary evil' and want them to disappear against the siding.

I think the green is a good idea.

Try something like this to give your home more presence.

Color on top left of door is S/W Gyser Steam and I’m wondering if it’s actually closer to the color of house in the photo I attached. Color swatch on right is Comfort Gray.