I love the brushed metal look on anything. I'd also think about spraying down a strong clear gloss that is built to last on your painted parts to give it that extra shine. The pismo's scratch pretty easy. Also of note: try to get some iBook keys, because I had seen that checkerboard mod. That would be something to work around with (different coloured keys). The Aluminum PB Pismo look would rock though.
_________________________
MacBook 2GHz Intel Core 2 Duo w/ 2GB DDR2 RAM & 120GB SATA 5400RPM HDD
Canon Rebel XTI
Google Cr-48 Beta Laptop