Changing button colors on MadCatz SFxT Pro Line

I want to swap out the buttons on my stick to correspond with the button colors used on the SRK KoFXIII wiki.

Can I just swap out the plungers instead of buying whole new buttons?

They are out of green whole buttons but not out of the plungers.

Anyone have a video link on how I would go about swapping out the plungers?

Youtube is your friend (so is Google):
http://youtu.be/tuQ2UwATVBM