A failed Creation of Skin Tone Colors - How to we teach AI that everyone has a different skin tone

I was using the Make.com integration and asked Chatgpt to describe a photo that was a woman of color. I created this image using another system. The response that I got was that ChatGPT was unable to identify skin tones. As a person of color I would like to be able to create an image of another person of color. Being able to say brown would be a start for a company that was meant to be for everyone.