Gray, green and white garden. Lavender, Iceberg Roses and Catmint. Nice combination but we would not use roses because of diseases.
Great Hell Strip design - yeah, add in some allium bulbs for round balls of color.
Garden border for front of Evergreens consider: Hydrangea Annabelle, Agapanthus, Salvia 'Mainacht' and Echinops. More of a cottage garden border feeling.