thunbergii f. atropurpurea 'Helmond Pillar' is another upright cultivar with purple foliage, which can be clipped into a low hedge.

Sometimes you come across a plant that seems to do everything. This grass qualifies (I haven't grown it yet, but am thinking I will). The description reads like a Harvard degree: "Unique dwarf, compact habit. ... In spring, the foliage is blue-green ...