Didn't get back in time to add this to previous post, but here's the view out my front door. We've got the grey wet concrete, the gold and brown and the green. When we finish the rock wall (which I was going to do this year before my knee went bad) there will be a bright red maple on that corner near the silver-grey of my neighbor's car.
I'm not so sure about half the quilt being gray... but it works with the other colors.