How about a double post? Let's start with kiko 320 with pupa 810 on the moons (plus one accent nail). I was in the right mood for matte and really like the final effect. Relaxing and nice, almost art deco-ish.
And, bonus pic! I already showed you H&M's peacock green on the new year's eve skittle mani, but I wanted to have it on all my nails, because it's such an amazing color! I'm very happy of it, definitely recommended.