Color difference when replicate the training code

[nftblackmagic]

Hi there,

I recently replicate the training code. Came across a really interesting problem.

This is my overfitting inferencing test. I got the final results with color difference. It looks weird. The three rows has different guidance_scale = [0.99, 2, 5]

This is the inferencing of official weights.

The only difference between two pictures is the unet module.

Does anyone have any insight into what might be causing the color difference?