Euonymus emerald & gold
Euonymus gold is a popular little shrub with bright golden, variegated leaves, turning pink-red in the cold.
Ophiopogon nigrecens
Black ornamental grass.
Arabis
Arabis is good for ground cover and rockeries, growing well in poor soil. Grey-green leaves and fragrant white flowers through spring.
Aubretia or Aubrecia
Aubretia - sometimes called Aubrieta or even Aubrecia - is a fantastic low spreading rockery plant. You'll see its vibrant blue-purple flowers in early spring. Very popular.