Defining a css style with linking

Hi,

I would like to get multiple css styles defined by linking. Example (a dummy one):

There would be three links on some page (whatever it is): red, blue, green.

Clicking red would display a wordpress blog with style ”red.css”, clicking blue with ”blue.css”, clicking green with ”green.css”.

How could I make that in the easiest way. I would like to ask you to be specific, i’m not kinda php guru 🙂

Hope I was clear

Thankyou very much,

chichi