adding arcade buttons to my oxygen 8v2

So first thing is first, dose anyone have some spare colored UV knobs they want to sell?

second, id like to add 4 arcade buttons to each side of my oxygen 8v2... even if i have to build a plastic casing to add onto it, what i want to know is, once i figure out how to build the buttons in, is it going to be possible to map those to be my cue point juggling buttons, then remap the black keys that originally controlled cue points when the peddal is engaged to be different values of a beatmasher (which can still be modulated by the expression wheel) and then remap the beatmasher knob to somthing else? i was believeing of like an ice reverb combo or somthing, a nice sweeping effect for building drama or drops.

all info is much appreciated. thanks.