Shifter Knob

Hello. I just got my beetle about 2 weeks ago.  It's a 2001 automatic turbo.  I love the car.  It was owned by an old lady and it's fully loaded.  It's a wonderful car, but I was hoping to make some changes to it to have it more personalized to me.  I was wanting to change the shift knob and the emergency handle to blue to match the car color, but I'm not sure how to do it.  Could anybody please help me?  Thank you.

if i had bought a turbo kit for my 1999 vw beetle would there be any problem in the long run of the car,