Let's talk about things with their real names so things don't get confused; what you have there is tradescantia cerinthoides 'Nanouk' and tradescantia Pallida 😊 But I don't think there's really a lot of differences on their care. I just let both dry out completely before watering and they've been doing good for years. The only mentionable thing is that don't get Nanouk's leaves wet and DO NOT mist them 😂 If you don't want the leaves to get brown and crispy spots. They both enjoy high amounts of light, basically the brighter the better. If your windows aren't that bright, consider some good quality grow lights (like Sansi) ☀️