Prompt to make same image using API that I made in ChatGPT / DALL-E API doesnt understand the meaning of 1-Bit

A minimalist 1-bit illustration featuring a green opera house under a full moon, with a low level of detail. The image should emphasize simplicity and elegance, using only two shades of green to create contrast between the opera house and the night sky, capturing the iconic silhouette of the building and the luminous moon above it.