I swatched the Aqua Liners as well. I bought #8, Iridescent Electric Purple, at the local Sephora, but had to order the other two online. They arrived Saturday with my Aqua Creams.
Once again, Photobucket issues. I resize and label my pics which show up fine in Photobucket, but come out all wonky here. They eventually fix themselves. From left to right, they're #7 Diamond Black Purple, #8 Iridescent Electric Purple, an #14 Diamond Multicolor Black. I'm hoping when you read this the labels are visible!
outside no flash
outside with flash, which are sort of blurry, sorry!
inside no flash
inside with flash
The Diamond Black Purple seems to be more of a black base with the purple over it, lots of sparkle. The Iridescent Electric Purple is a gorgeous purple! The Diamond Multicolor Black is enchanting, loads of sparkle, particularly pink and green that show through.
I haven't worn purple liner in a few years. I normally wear black gel liner, which does come in two purple shades (Tanzanite and Venomous) but after wearing them a few times I discovered they make my eyes all red and irritated. I'm not sure which specific ingredient is the culprit. I've worn purple mineral shadow a few times but it's not quite the same. This purple didn't irritate my eyes, and is a gorgeous color!
Hope you've found the pictures helpful, and thanks for looking.