I decided to go to my spreadsheet of polish for inspiration, and utilize the first polish I had listed as still untried. That turned out to be a crackle polish! For an interesting effect, I did a horizontal ombre under it and mirrored the gradient with teardrop studs. I love it!
The ombre was created using SpaRitual Dreams Becoming Reality on my thumb, Nicole by OPI I Sea You and Raise You on my index, Sally Hansen Blue-ming Fast on my middle, Julep Bess on my ring, and Tea Beauty Mint Leaf on my pinkie.
The crackle polish is Sally Hansen Star Burst, a black crackle with a generous mix of silver glitter. I was a bit worried that it was going to be a bit too goopy to work, but it cracked easily once applied. I really like the effect when paired with the changing shades of blue. As a last touch, I used three colors of teardrop studs to mirror the ombre.