I had the same experience on their site, even following the given example! "Show me a horse" -> a brown horse appears. "Make it black" -> now it has black fur

I had the same experience on their site, even following the given example! "Show me a horse" -> a brown horse appears. "Make it black" -> now it has black fur. "Make it white" -> I'm sorry, racist content is not permitted, you are a bad person