First, look at the bottoms of the puppy's feet. At 1-3 days old you can tell if your puppy will be roan or brown & white by looking at the color of the pads of your puppy's toes. If the toe pads are pink, your puppy will be brown & white. If the toe pads are brown or mostly brown, your puppy will be roan. On roan puppies, the pads of the back feet tend to darken in color more quickly than do the pads of front feet.

Next, look at the tops of the feet. If the fur has a grayish cast, your puppy will be roan. This grayish cast will intensify and travel up the legs and onto the belly as the puppy matures. Eventually, the roan coloring will cover all the white areas of your puppy. Your puppy's roan coloring will continue to intensify and darken until your puppy is two years old. You can get an idea of how dark roan your puppy will be by looking at how quickly the grayish color travels to your puppy's belly. A 5-day-old puppy with fairly dark gray paws and legs, with gray on his/her belly, will be a very dark roan dog as an adult.

Below are some pictures of puppies from the D Litter from 1-day to 6-days old, showing the differences in coloring of the roan and brown & white puppies.