Judging by the desaturated colors you don't have a VAE loaded. You might want to download a VAE and tell Stable Diffusion to use it. This will make the colors a lot more vibrant.
If you choose to use the VAE from the Anything model then you'll probably have to launch the WebUI with the --no-half-vae parameter, otherwise it will occasionally produce black images. Took me a while to figure that one out.