well, you can always add cold cathodes to a powermac. Its relatively easy and cheap. But you want them to show, so older powermacs, non G5's, will need aditional modding in order to show the lighting off, like a clear panel on the side.
_________________________
"Fix it 'til it Breaks."
Jacob - EiC & Director of Technology Mac Pro Quad 2.66 - 4GB RAM 160 GB SATA RAID 1 - 650 GB Storage Quad 19" Widescreen LCDs Accessorized to the Hilt
i had an old powerman and i painted it straight silver looks nice... if u want to do a cool mod that looks nice. try painting it ur fav. color and droping a cold cathode in it... not expensive and looks great when its done.
Why not mount it in a custom case? Building a case from scratch will teach you lots of good skills for future case modding, plus all the basics of taking apart and building computers.
If you don't want to build it completely from scratch, get hold of an empty one and chop it about to fit. A great way to pactise with saws, drills, dremels etc...
Then once you're done, you'll be equipped for modding the current case and you can move the contents back to that one.
I think the clear plastic side will be very hard to do properly (not to mention a bit pricey).
Cathodes are really easy to work with. There are several different types eg. some with an extra protective layer of plastic (can't remember what's it's called). But basically they are all used in the same way...
They aren't expensive, and are loads of fun :P
_________________________
- iMac g5 2ghz, 1.5gb ram. - eMac 1ghz (clocked at 1.27): 1gb RAM, Dual Layer Pioneer DVD +/- RW, 80 gb HD, 160 & 250 external Lacie FW HD´s. And modified cooling. - iMac 600 mhz - b&w in atx case, with sata drives :p - PowerMac g3 b/w - with atx psu - PowerBook G3 Wallstreet