How to create a garden bursting with multi-colored, variegated foliage

Imagine a garden with nothing but plants whose foliage is variegated in multiple colors, not just green and white or green and yellow, but with pink, orange, gold, burgundy, or red or a combination of these colors.

I thought about such a garden when ogling a neighbor’s low hedge of glossy abelia. There are many colorful, variegated dwarf cultivars of this species (Abelia x grandiflora): Kaleidoscope reaches no more than three feet tall with yellow, orange, and red leaves, or the similarly...