So you "bit the bullet" and made the plunge! You must be very happy to find the color working with everything. The color looks slightly warm which goes with the stonework, trim and kitchen cabinets. It is important the color was chosen in natural light which gives the true color (it can also be seen under a white florescent desk light) and goes with everything, when the light changes all the colors will still coordinate!

Your facade is begging for some variation in materials. I would look to some of the WPA lodges as inspiration. You've got a grand structure that could handle the massive timber look, and the end result would balance out all your stone. Of course, it would mean removing the stone around the windows. I think it would be nice to have heavier timbers on the porch/breezeway area, as well. I also think your windows could use more architectural detail in the form of muntins. your upper windows should be brought down to the same level, and I think it would help if they were a little taller. I think the right side could use one more window, since it seems that the right side is wider. It would be nice if the windows had heavier trim. A different color sash than trim would help the windows to pop. Shakes on the upper portion would be another more classic texture that would complement the stone. Also, it might be more appropriate to have a more natural looking landscape that uses indigenous plants and boulders that match the mass of the house. Here is a mock-up...

There's already been snow on the ground in Eastern Oregon too, but believe me, in summer we need something that reflects heat, not absorbs it. But this home is considerably further north.

That really sets off the look of your garage. You are definitely right that it pairs well with the stonework. Great work!