No, only the D3 and F-series do
thank you, but is there a way to hack it?
I really like the Z series for the size of the screen, but would hate the blue buttons..it'll look really odd
So get 12 PLCC2 Led's in the color of your choice, a fine point soldering gun, thin solder (0.030 diameter would be suitable) and very pointy needlenose pliers, and go for it 
Lol, just kidding, but not really. There's no 'hack' for the Z series button colors, only replacing the LED's on the circuit board. You can go to that link that djmixmac provided and see for yourself, but with any soldering experience, it's not a hard job.