Nearly black foliage, really beautiful plants.

Bright indirect light, keep soil moist but never soggy. You don't want your colocasia to completely dry out, but it won't be happy with wet feet (letting it stand in water) so make sure it drains completely when watered. Must have high humidity, can be prone to spider mites in dry conditions. Can be moody about water, you may want to let tap water sit out overnight or use filtered water.