Asymptomatic

There must be intelligent life down here

Thinkominos

I think I received this puzzle as a Christmas or birthday gift, but from whom I can't recall.  It's been on the shelf for a while, and I remember having solved it at one time, but can't remember the solution.  I'm sure that I just happened upon it randomly if I did know it.

Basically, Thinkominos is a puzzle with six hexagonal pieces.  Each piece has six circles of color on the top, one for each of the piece's edges.  Every colored circle on top of a single thinkomino is different, and is either red, orange, green, blue, yellow, or purple.