Shift Knob Replacement - Auto Trans

Okay, so ive got a 96 geo prizm, 1.6L MFI DOHC with an automatic trans and its turboed (crazy right? haha) and the stock shift knob is uber boring. I want to change it out and know how to get it off but its got the side (thumb) button and im hesitant to buy one and not be able to use it. anyone know of any specific knobs that could work. i want something silver or black and sporty to match the car if possible....