I remember that there was a site where I could search for scat images, I don't remember its name, it helped me a lot because it showed the artists of those drawings or what page the image came from, I only remember that the interface was blue.

Blue huh? Was it perhaps e621? A furry image booru.

https://e621.net/posts?tags=%7Efeces+%7Escat

Only site I can really think of thats blue like that.