I managed to light up the cigarette lighter. It was really easy. I just fitted a 1,2W 12V small bulb on the top of the seethrough plastic ring and that was it. I powered it through the connector and now it shines. I will post pictures when I have time to take them.
I was thinking to do it even more "professionaly". Tiburon has a very similar lighter and I am going to get that one from a tiburon and buld it in my Getz. It will be even better I think.
Oh and I also put a pair of lights to light the space where the pedals and passanger's feet are when you open the door. It looks really nice, because I used normal lights (same as on the roof) so they match in colour. Will post pictures.