If you love the blue fawn coloration and you also love the pieds (both of which are recessive characteristics, which means that they must inherit a copy of the genes from both mom and dad), then you will love the blue fawn pieds. As is the case with all pieds, no two are the same. Some have quite a bit of white, while others have much less white. The color of the blue also varies such that some have quite a lot of the fawn coloration at birth, while others look like blue pieds for several weeks until some of the fawn coloration starts to come through. Regardless, they are beautiful. This nice litter from Corona and Apollo has 5 pieds, one of which is a blue fawn pied named Mercedes that you can see at the 3:40 mark.
Ryker is a heavy blue fawn pied, which means he has more blue fawn coloration than white. He head is also solid blue fawn, which is fairly rare as there is generally some white on the heads of pieds. You can see him at about the 2:05 mark.