Ha, I did something similar as a joke with https://aisiteoftheday.foureighteen.dev. Wondering if you did anything special for accessibility and contrast? I found in my examples gpt-4o struggles to generate good text contrast with any text overlaid on a photo.

It might be a prompting skill issue on my end though. Maybe if I cared a bit more I could make provide a tool to the LLM to calculate contrast between two colors and provide it as a tool?