koja,
I got "knowed up" from my lighting lady when we converted the whole house to LEDs...
Associated with the wattage should be the color temperature, measured in degrees Kelvin. This information is almost impossible to get with automotive lighting.
The cheaper LEDs are all super hot 6-8000k lights that put out intense white colored light. Same with many cheaper or first gen indoor lighting options. For vehicle lighting, they figure brighter sells better so the "warmer light color" (lower K) lights are used for specialized lighting, like home interiors. Plus, the cooler the temp (lower K) the more expensive the lights are to manufacture. We may eventually see those in automotive lighting but, it may take a couple years. For now, they are all about white light lumens.
Part of the problem with HID is the cost of the step-up circuitry to power the bulb. I don't see that coming down any time soon. If you like them, you may want to buy a set while you still can get them. Incandescent bulbs are heading the way of the dinosaur.
The lower limit right now is around 2700K, which is about what an incandescent bulb puts out. If you try some of those at home, you may find you really like them. In my workshop, I want a little more white color so I am going to install 100w equivalent 4000k lights. They only draw 15 watts apiece!!!