Complementary, my dear Watson.

Okay, I'm semi-sorrry for this post title.
Anyway, a good complementary contrast always stands out so I wanted to apply that in a nice sponge gradient mani.

Polishes used:
2true, 'Shade no. 25' (orange)
2true, 'Shade no. 15' (blue)
Essence, '01 - Wonderlicious Green' (it's blue, damnit)
Golden Rose, 'Scale Effect 12' (flakies)

2true's shade of blue works very poorly as a polish on itself, so I layered it over the ever misnamed Wonderlicious Green, to have a good blue base. The 2true blue is a very sparkly polish, and so is its orange, so those work together very well. The orange is pretty well pigmented, and though a bit coppery now, is really a very bright orange when used on its own.

And finally, I feel the largely orange flakies tie the whole together quite nicely