I might just be a little obsessed with playing with my new Pipedream A Night in Vegas Collection polishes. I do apologize for that, because I know how hard they are to get. If you are really desperate for a neon set that marbles well, check out this post from The Polished Perspective, as she shows you a range of alternatives that are easier to get your hands on.
Anyway, here is another look I created that is totally out of my comfort zone with lashings of pink and purple.
My base is just a simple polish that I mixed up myself using ultra holo silver glitter from Glitter Unique and suspension base. The marble is done with On the list and VIP pass and a clear polish to create the gap to see through to the silver holo base.
I also used three Swarovski crystals in three different sizes, in pink, purple and silver. Swarovski crystals are so much better than any acrylic ones. I have several wheels of acrylic ones and I doubt I will ever use them again. The Swarovski ones are reusable so the extra money you spend is definitely not wasted. I got mine off ebay.