Maybe I've had my head in the sand for far too long, but I had never heard of LayerVault until today, and I know them now for all the wrong reasons.
I find it somewhat silly that no matter what trend you follow, someone will always be there, waiting to pounce.
This isn't the mid 2000's, "First" posts were childish back then, and "First" claims are the same now.
...and seriously at the colour schemes. The flat colour trend is basically the same as a new art movement (it's only pastel colours made more vibrant). I predict that with the current trend being Real -> Flat, the next phase will be a new form of Pointillism.
If we really wanted to be picky, you could draw comparisons between the way that LV do human faces (see bottom of the Tour page) and the old Mac OS logo.