MD, there are so many other blue greys to play it off of; I like Hosta 'Krossa Regal' or 'Regal Splendor'; sounds silly pairing Hosta with a full sun evergeen, but there's always a north side of a tree, and both these take a fair amount of sun. A lot of the new Dianthus cultivars have that same blue color, and many of them have much increased bloom times; 'Fire Witch, is nice and I currently have good old 'Bath's Pink' which has a wonderful fragrance. German iris has that same bluish hue in the foliage and you can go nuts with the flowers (MD, did you know Dr. Mcewan, the iris guy up your way? Amazing plantsman, and nobody did more for irises than he did). Or if we want an actual native, Sisyrinchium angustifolium, or blue eyed grass, would be the perfect little compliment all around the feet of a 'Fat Albert' spruce.
And that's just if we want to compliment the foliage; we can contrast with reds and yellows and that's two whole new lists...
What if we could find a rock with just a hint of red? Like the[url=https://www.mindat.org/photo-174096.html]pink feldspar[/url]we have around here in places...? With powder blue trees and grey gravel?...hmmm after reading this it might be a touch Dr. Seussical.
My 'Fat Albert' I keep in the front yard (a gift to DW for a birthday because she wanted a tree she will always be able to decorate at Xmas) I do not prune with pruners; I debud where I want to slow growth and prune and allow other parts to fill in more> I have no pruning scars or brown tips this way, ant the ramification is really starting to show. My second favorite tree in the yard after my Full Moon Maple...