[sp332]

I thought of this article: https://www.crosslabs.org/blog/diffusion-with-offset-noise I don't know how much this applies to SDXL, but you might need a LORA to get very bright or very dark images. Gray could be a much easier targer.

[nascz]

That's an interesting article. I wonder if SDXL was trained with this in mind while earlier versions maybe weren't?