Only 8 screws to remove your bindings, and I hate to say this but if you're more worried about colour than how it performs you might be wasting your time asking the question!
To answer your first question again: Yes a 156 sounds too big for you, it will likely be easier to learn on a board designed for your weight.
Hope this helps!
Definitely shoulda gone with the 153. I'm 6'0" 155lbs and I ride a 156 for freeride/all mountain.
Alright, I guess I'll try to return my board for a smaller size.