How can i change my gauge lighting to blue on a Jeep Wrangler?

I have a 2004 Jeep Wrangler and i found a 3 pack of light bulb colors in blue so my question is how do i put the bulb covers on? http://www.quadratec.com/products/95202_100.htm thats the site they are on just help me go through the steps on how to change itHow can i change my gauge lighting to blue on a Jeep Wrangler?Step-by-step with pics, see link below: