I think it is too unclear what exactly this is. I thought it was actually a joke at first, as if it were facetiously claiming that many of Google's projects are

I think it is too unclear what exactly this is. I thought it was actually a joke at first, as if it were facetiously claiming that many of Google's projects are following in the footsteps of others. Once I realized it's essentially a different theme for Bootstrap, I decided it's actually pretty cool, though.