I'm not much for attempting nail art myself, since any artistic talent I may have does not translate at all to nail polish. I bought a dotting tool set once upon a time and used it once. Luckily these "syrup nails" are easy to do, even for a nail art dummy like me.
"Syrup nails" are basically a type of gradient manicure that uses a sheer jelly. In my humble opinion it works best with a polish that is very sheer--I feel it gives a smoother looking gradient this way. I did mine with ORLY Beverly Hills Plum, which is a beautiful translucent coral. This is 7 coats of Beverly Hills Plum at its darkest, plus 2 coats of Seche Vite and 1 coat of NYC Grand Central Station. One of my favorite things about wearing this manicure is that all the layers of lacquer gave them the super-glossy gel nails look, which I love. A commented that it looked like I had dipped my nails in blood, which the macabre in me also loved.