As promised, here comes a comparison of Color Club "Blue Heaven" to 3 other blue holos in my stash. Now keep in mind that I chose only blue holos that looked closest to Blue Heaven. If you see any on my list and not here, then it's because they looked totally different, either way too dark or too light to be similar! However, don't hesitate to ask me if you'd want me to compare them anyway =)
First up is Depend #2034, holographic nail polish available mostly in Sweden only. Holo effect in this one is very different, as you can see it's mostly scattered and just somewhat linear. It also looks like a muted blue, not as bright as "Blue Heaven". 3 coats to reach full opacity, and special Aqua Base basecoat needed to prevent patchy application.
Next up for comparison is Nfu #65. This one is much closer to "Blue Heaven" than Depend. Its base is pretty much the same color, although it seems like there might be more silver in "Blue Heaven". Or maybe it's just the crazy strong holo effect that makes it look more silver? Nfu has a weaker holo effect, and it requires aqua basecoat and 2 coats to reach opacity.
Finally, I've got OPI DS Sapphire for you. This one looked sorta close in the bottle but is very different on the nail. It's a dusty, murky blue with scattered only holo effect. No special basecoat needed, and 3 coats to reach opacity.
I hope you guys found this helpful!!