OPI Ink and Finger Paints It's an Original:
OPI Ink (index and ring) and Finger Paints It's an Original (middle and pinky)
The finish is obviously different, with Ink having a slightly duochrome glass fleck thing going on, and Original is just a straight blue-purple shimmer. To me in person, the flecks in Ink make it look a bit more blue, which doesn't show in the picture. Both only take two coats.
And to refresh your memory, here is how Finger Paints looks alone (except a bit too blue, but this picture shows the vibrancy quite well... maybe it's because it has a top coat).
Finger Paints It's an Original