The terratone should work well with almost any shade, because it picks up the color of what is around it. If you don't plan to paint the red brick out front, you are limited to some extent. Can't quite tell if your roof is brown or gray tones, but with your wonderful landscaping, consider browned or grayed greens, medium or dark grays (which work well with red brick), or even a warmer brown, if you paint the brick.

Take a look at Benjamin Moore HC-109 Sussex green for the main body color and Benjamin Moore 957 papaya for trim. These colors work well with the windows and the red brick.

Thanks for your comments. The roof has is a gray brown mix. We are not going to paint the brick.

Yes i figured the brick would stay . Another option would be to match up the terretone windows and paint all the window trim , so the windows appear larger. Paint the main body of the house a clay/ sandstone color and use the natural brick as a accent.
I did paint a house similar style , same window color with a sage green and the papaya color I mentioned . More food for thought!

My suggestion is to google "mid-century exterior house paint colors." Slate Grey is a constant suggestion you may run into, but it is really what appeals to you. You will add value to the house if you stay with the era in general, or with a modern twist.