I was thinking different. I have that heuchera and if it goes in to much sun the spots turn a beige/tan color but might be ok in the spring. The spots are pink then in early spring. I was thinking of back dropping in another color to set that beauty off.
maybe one of those variegated Phlox
Maybe this little tree. I can not for the life of me remember the name but Sue you might know. Has nice winter structure as well. Found it Corokia
maybe one of those variegated Phlox 
