Joseph's Coat Tricolor (Alternanthera ficoidea)
Indoors, grow alternanthera in bright light. It's one houseplant that can tolerate a lot of direct sun on its foliage (in fact, the more light it gets, the better its foliage color will be). Water enough to keep the soil moist, but not wet or soggy. Alternanthera wilts fairly easily if it gets too dry, but quickly recovers when you water it.
Outdoors, grow alternanthera in sun or shade. Just like as a houseplant, alternanthera has better color in the garden or container gardens when it gets more light. Water regularly to keep the plant from wilting. In the garden, it thrives with about an inch of moisture a week; in container gardens, it benefits from watering every day or two in hot weather.