I discovered a new band : Alt-J (which means delta and is also seen as : ∆ )
It gave me the idea to make some triangles on my nails while listening to their gorgeous songs...
"Triangles are my favorite shape
Three points where two lines meet
Toe to toe, back to back, let's go, my love; it's very late
'Til morning comes, let's tessellate...." > Alt-J
*nail polishes = Kiko, Pupa