How's this for a dramatic companion planting? It's completely accidental of course and, at the moment not perfectly composed, but this has the potential for being an excellent late summer combination.
The berries are from Arum maculatum, the leaves of which are dormant at this time of year and the foliage is of Hosta 'Osiris Soleil Levant'.
I'm thinking that a better composition could be created by surrounding the Arum with another one or two 'Soleil Levant' so as to combine the two plants and to make more of the differences in colour and texture. A. maculatum is also a wonderful foliage plant in the Spring with leaves marked with black inky spots and typical flowering spadix.