We have a few areas of our yard that have full shade or spotty shade from the trees.
Coleus is a bright spot and very colorful for those areas. It comes in numerous varieties and colors. It makes tiny little purple flowers. You can pinch off a piece of it and stick it in the dirt to make more plants. I pinch mine off it gets too leggy looking.
Coleus is a great bargain and you can find it at most any garden center. It grows very fast you can almost watch it grow.
I like to mix the lighter one with the darker one for more color pop. Add some bright color to your yard and enjoy some Coleus.