Tradescantia

albiflora 'Nanouk' cultivar

Thick slightly succulent leaves striped green, cream and pink-purple, with soft pink to purple undersides.

fluminensis 'Tricolor Minima' cultivar

Small fleshy leaves striped green, cream and pink, often with pink undersides or blush on new growth.

pallida 'Purple Heart' cultivar

Long narrow succulent leaves in deep purple to violet; small pinkish-purple three-petalled flowers may appear.

zebrina

Small fleshy ovate leaves with metallic silver stripes, green to purple upper surfaces and purple undersides.