Lighting up my case, what do I need?

[smsmasters]

I want the inside of my pc to look like this:

I also like the lighting behind the monitor.

What exactly do I need to buy and what are they called? LED or cathode, which is better and where can I buy some?

 

[smsmasters]

How did the guy manage to put an orange light behind the monitor? How do you think he powered it? And do cathodes need an inverter, is it true they have high voltage?