Colorful-Veined Funeral Plant: Dracaena, Caladium, or Croton?

A potted plant from a florist (south central KY) has long oblong leaves with vivid central veins (yellow, pink, orange, red), colors intensifying outward. Center leaves are all green. No stems—leaves emerge from soil. 1 foot tall in 6-inch pot.

The expert suggests Dracaena, Caladium, or Croton but needs a photo for certainty. General tropical care: shade, protect below 45°F, water by weight (soak, drain, wait until pot feels light).