purple stems/buds

Hey guys, iv got a plant about 6 weeks into fowering and the the stems and buds are turning purple? is that normal?
Also theres hardly any leaf in the buds, its all pistils and fake seed pods. They dont look very thick.

thanks in advance.

What is the name of the plant? How low is your night time temps?

Can you get a closer pic of the buds?

that looks like some serious stativa right there... hope you got about 12 weeks.