It would be hard to try to match a halogen bulb color with a HID bulb. I had Silver Stars for my brights and took them out since I have a bi-xenon projector. 9005 Silver Star was no comparison in lumen output compared the the HID.
In case you are not aware, the HID bulb color is achieved by the blend of metal salts within the bulb itself. As your HID bulb ages they will gradually start to color shift towards the higher end of the kelvin scale. For example, if you have a 4300k HID bulb that is a five years old, it would have a blueish tint compared to a brand new 4300k HID bulb. Also, if you go with cheap HID bulbs, the color will not be exact.
Below is a good example where I had the passenger side 4300k HID bulb go through an extreme color shift. Maybe somewhere around 12000k. Driver's side is 4300k. I think the extreme color shift happened because my wife forgot to turn off the headlight during the day when she went on an 8 hour road trip. The HID bulbs were running at 70% power since I did not have the cap mod completed yet.
This is a picture of my Morimoto 4300k HID bulbs in the the headlights and fog lights. They are around 15 months old. The fog light has a slight blueish color in the pic, but it is white light in person, same exact color as you see in the headlight.
As far as power issues go for the HIDs, I personally went with the capacitor mod as it retains the auto lights. Parts are less than $5 and took about 15 minutes to install. I manually turn my headlights off during the day with the selector switch which is not a big deal. At least with the cap mod, it will supply 100% to the HIDs at all times day or night. It will also prevent the buzzing sound from the ballasts when you hit the unlock button on the fob, thats if you have it setup in your DIC for your headlights to come on when you unlock your vehicle.