model info : https://civitai.com/models/5245/kotosmix

you can apply VAE to get better color,

example codes for diffusers:

#VAE
from diffusers.models import AutoencoderKL

vae = AutoencoderKL.from_pretrained("stabilityai/sd-vae-ft-mse")

modelid="digiplay/kotosmix_diffusers"

pipe = DiffusionPipeline.from_pretrained(modelid, vae=vae)

PS: Recommended Euler scheduler type.