The blue tint thing is about the biggest sales pitch there is.
It's marketted towards people that want their car to look like it came with expensive headlamps.
The blue coating on a non HID lamp actually reduces it's lumen output, and blue is one of the least visable colours in the spectrum. It also causes problems with glare towards oncoming drivers. They are also illegal in a lot of areas, not because they are too bright but because they are dangerous. You may think they are better, but you actually just spent a bunch of money and got poorer lamps.
HID lamps emit a blue color as a byproduct of igniting the gas in the lamp. The lamp technology provides a more intense output per watt, not the blue tint. It's not a lamp change. HID systems require a lamp and ballast kit and generally use completely different reflector design in the lamp housing itself. Basically, if you want HID lamps, but a vehicle that comes with them, or buy the complete lamp housing assembly. Anything else is just window dressing.