LED lighting has come a long way in the past 10 years. Just replacing the stock 194 bulbs with white SMD LEDs and you should have equal, if not better, light output than the stock halogen bulbs.
The "cool white" probably the color you'd want. The "warm white" would be more like the stock lighting color. If they just label it as "white", it's probably the cool white type.
As far as spending $50 for just interior bulbs, I've been there and done that with many vehicles.. Just my .02, but just order them from ebay. They are a whole lot cheaper and I'd bet places like superbrightled or autolumination get them from the same places. For instance, I just picked up my wife a 2012 Terrain SLT-1 with 19" wheels and all options other than the chrome package on new year's eve. Same night I ordered some interior LED bulbs for it, I got 10 bulbs for the total price (shipped) for a whopping $10.28. Pictures of the bulbs are attached.

From what I looked on sylivania website, seems all the lights are 194's.... But I wonder about the cargo light, but I didn't bother popping the cover off to verify. Fingers are crossed.
