HID kit 2009 sedan question

[47_MasoN_47]

I would use the search, but I'm not sure if it's broken or if it just doesn't like Firefox on Ubuntu or what, but anyway I am not too impressed with the brights on the Yaris and I've heard people talking about HID kits. After reading about them for a while I figure it sounds like a easy way to get brighter lights (plus I like the blue look). I found this one (Link) and had a few questions.

1. From my understanding I will still have bright/dim controls. Since that website makes you specify brights or dims, if I choose bright will I still be using the factory dims or does the kit have dims in it also?

2. Will this void any Toyota warranties?

3. It seems that this will work with the factory headlights, is my assumption correct?

4. Am I going in the completely wrong direction/is there an easier way to get the nice blue look and get brighter brights at the same time?

Thank you again for your patience in dealing with a huge n00b.