Shade beds are beautiful and provide cool oases in the heat of the summer.
The dark foliage of the Heuchera in this garden, off sets the colors of the pink/purple flowers, with the yellow of the day lilies acting like a beacon of sunlight.
Foliage can be used to bring light into the shade. This Hosta looks like a chartreuse flame. I love it pared with Aquilegia Canandensis.