I did a grey wash on the foundation stonework, per April's suggestion, and while I was afraid to do it, I like the final effect. (Thank you April)
It is so subtle you wouldn't know it has a coat of grey, but it's just enough to make the foundation stone a bit darker and "weighted" at the base.
There is still quite a bit of trim to go on the exterior. I have delicate victorian rail and some other special bits that are drying after their third coat of paint. But I think they should go on last, so I'll be installing the windows next.