Yah I've used those tubes for my computer before.. I think u can buy them with the inverter and all at around 10-12 bucks if I remember correctly from Kaichi* SLT 3rd floor...
But problems are:
1. White, so have to add something to colour it (eg. blue cellophane)
2. Very fragile, a little twist and it snaps
3. Inverter can give a rude shock if touched (also a little bulky)
4. Overall more ex than LEDs, but better spread of light (LED very concetrated)
Someone try it out and see how?