G4 Powerbook to (Dual USB) iBook key swap possible?


I was tooling around Comp USA today and I noticed how people have picked the keys off the G4 Powerbook and the new Dual USB iBook. So not wanting to be left out I plucked a charcoal grey key off of the G4 Powerbook and place it on the snowy white surface of the Dual USB iBook. It seemed to fix perfectly.

Here is my obvious question:

Can you put the charcoal keys designed for the G4 powerbook onto a Dual USB iBook? Do all the keys fit perfectly? If so, where can someone buy the whole set of charcoal grey keys? How much do they cost?