I have seen this on pintrest and I can't get over how badly I wanted to do it but I was scared that looking down at my nails all being different colors would freak me out. It doesn't and I LOOOOVE it. As long as you use the white blending technique they are noticeable enough, but not over the top!
I used Ulta's Brownette and Sally Hansen's White On
It made quite the mess and I had been trying a bunch of different colors before deciding on this one.
Also I didn't use a nail brush like she did, I used the brush that was in my Brownette and just wiped it off a lot. If that makes any sense