In a flower bed, to enhance the flamboyance of the Lily 'Royal Sunset', pair it with warm tones. For example, plant the Crocosmia 'Lucifer' with intensely red flowers on long arched stems next to it. Add the Achillea millefolium 'Terracotta', more rustic, which offers umbels of a perfectly matched burnt orange with the warm tones of the 'Royal Sunset' lily. The finely cut foliage of Foeniculum vulgare 'Purpureum' (bronze fennel) will create a very flattering hazy background for its companions.