Can I change the shift nob on the automatic?
 

I don't really like the looks of the shift nob on the automatic BRZ i was wondering if that's changeable?

I'm 100% sure it is

do you just twist unscrew the knob like how you do it on the manual?

I don't have a BRZ, or AT, but I would think so. Go give it a twist and try!

A company called Flossy (I think) is making aftermarket AT knobs. Dunno if the knobs are interchangable between AT/MT.

Some in member classifieds

They are not interchangeable. A forum member is testing out an adapter to make MT knobs fit the AT linkage.

And yes, the AT knob is changeable.

The AT knob is definitely changeable, it just twists off like the manual knob does. They are not however interchangeable, they have different thread pitch and diameters if I recall correctly.