Achieve the ombre effect in your nails without the use of sponge. Gone are the days of trying to quickly blend wet colors on your nails for an ombre design, furiously working away with a toothpick or paintbrush to get a gradated effect. Here is a simple and foolproof way to get a great ombre effect on your nails using scotch tape that will save time and headaches. You can use any color combination you like to suit your mood or time of year. This can be done with up to four colors for the best result.