Ticking is the "freckles" or "speckles" that usually appear on the beagles legs or areas that would otherwise be white. Ticked coats are generally softer than a solid white color pattern. It is a dominant gene, so if your puppy has some ticking usually one or both parents will also be ticked. 

These are the colors I see the least often. This coloring comes from a genetic mutation, and even though those words sound scary, they aren't at all. Colors have no bearing on the health of the puppy. I like to think of Lavender and Silver as the lighter shades of the grey category, which is likely the hairdresser in me speaking. Any of you who have an education in cosmetology will relate to that statement!