Color temperature is inverse to light output. Most factory HID setups are 4300-4500K, which are whiter and have more useable light. As you climb, you start going to blue/purple color, but your light output drops dramatically. Wattage does play a factor in light output, as 55w kits will produce more output than a 35w kit will. Here's a chart with the output for the Apexcone/DDM kits:
[FONT=Tahoma, Arial, Helvetica, sans-serif]Color[/FONT]
[FONT=Tahoma, Arial, Helvetica, sans-serif] Description[/FONT] [FONT=Tahoma, Arial, Helvetica, sans-serif]35 watt
Lumens[/FONT]
[FONT=Tahoma, Arial, Helvetica, sans-serif]55 watt
Lumens[/FONT]
[FONT=Tahoma, Arial, Helvetica, sans-serif]
3000k[/FONT]
[FONT=Tahoma, Arial, Helvetica, sans-serif]
"Ion" yellow[/FONT]
[FONT=Tahoma, Arial, Helvetica, sans-serif]3200[/FONT]
[FONT=Tahoma, Arial, Helvetica, sans-serif]4800[/FONT]
[FONT=Tahoma, Arial, Helvetica, sans-serif]
4500k[/FONT]
[FONT=Tahoma, Arial, Helvetica, sans-serif]
Pure white[/FONT]
[FONT=Tahoma, Arial, Helvetica, sans-serif]3400[/FONT]
[FONT=Tahoma, Arial, Helvetica, sans-serif]5000[/FONT]
[FONT=Tahoma, Arial, Helvetica, sans-serif]
5000k[/FONT]
[FONT=Tahoma, Arial, Helvetica, sans-serif]
White with a tiny hint of blue[/FONT]
[FONT=Tahoma, Arial, Helvetica, sans-serif]3300[/FONT]
[FONT=Tahoma, Arial, Helvetica, sans-serif]4900[/FONT]
[FONT=Tahoma, Arial, Helvetica, sans-serif]
6000k[/FONT]
[FONT=Tahoma, Arial, Helvetica, sans-serif]
White with a violet hue[/FONT]
[FONT=Tahoma, Arial, Helvetica, sans-serif]3200[/FONT]
[FONT=Tahoma, Arial, Helvetica, sans-serif]4800[/FONT]
[FONT=Tahoma, Arial, Helvetica, sans-serif]
8000k[/FONT]
[FONT=Tahoma, Arial, Helvetica, sans-serif]
Sky blue[/FONT]
[FONT=Tahoma, Arial, Helvetica, sans-serif]3100[/FONT]
[FONT=Tahoma, Arial, Helvetica, sans-serif]4700[/FONT]
[FONT=Tahoma, Arial, Helvetica, sans-serif]
10000k[/FONT]
[FONT=Tahoma, Arial, Helvetica, sans-serif]
Dark sky blue[/FONT]
[FONT=Tahoma, Arial, Helvetica, sans-serif]2900[/FONT]
[FONT=Tahoma, Arial, Helvetica, sans-serif]4500[/FONT]
[FONT=Tahoma, Arial, Helvetica, sans-serif]
12000k[/FONT]
[FONT=Tahoma, Arial, Helvetica, sans-serif]
Darker sky blue[/FONT]
[FONT=Tahoma, Arial, Helvetica, sans-serif]2700[/FONT]
[FONT=Tahoma, Arial, Helvetica, sans-serif]
4300
[/FONT]
http://www.therpmstore.com/product_info.php?cPath=35&products_id=744
The chart doesn't copy well. Colors are to identify appropriate numbers for each color.
Most OEM HID kits are D2S for the Mazda vehicles, but if equipped without them, you'll need to find the appropriate bulb size. Also, find out what wattage you're running, as some fog lights are only 35w, whereas low beams are usually 55w.