Interior Bulb - Help.

[Crisis]

Many quick questions. Basically Im going to replace the light bulb which turns on when you opne a door. Im going for a blue neon one.

My car is a VW Polo Mark 4 6N.

1. How easy is it to get the plastic casing off from over th light and how do you do it.

2. What size is the bulb? 32mm? 38mm? 42mm?

That is all thankyou.