I drive at night, and when I do, I want the best lighting that I can get as far as me being able to see, and be seen.
For various other reasons, I've looked at how the human eye works, and because of things that I've discovered (And independently verified for myself with experiments) I've determined that the high colour temperature of HIDs is nice if you want to know what colour something is in front of you, but not so good if you just want to be able to see things in front of you and around you.
The human iris reacts to light, contracting so as not to "overexpose" things one might see. It reacts more to higher energy light (IE, blue.) This means that the more blue your light is (Or less yellow = same thing) the more your iris will contract, restricting your ability to see dimmer light, like everything outside of your direct headlight beam. This also means that to get the same effective brightness, you need more total lumens from your lights. This will further restrict your ability to see some semi-suicidal animal on the side of the road before it's right in front of your car where you can't avoid hitting it. (Though you'll know EXACTLY what colour the fur is in the moments before impact.)
This also means that the irises of the drivers in the oncoming lane get subjected to that lovely white light and have their night vision ruined, though for a shorter period of time than you.
In the end, I chalk HID lighting mods up to a cosmetic thing, and have nothing to do with safety, in fact, they really qualify as the exact opposite, even the OEM ones. 4000 Kelvin is already too high for effective lighting for increased visibility.
I've got my Hella E-Codes on the front of the Supra, and I like them. I do like the E-code beam pattern, and the H4 lamps are quite inexpensive to replace. (In 10 years and >300,000km, I've replaced one.)
If you are going to be driving at night, I implore you to get decent lights that put enough light on the road in the correct place, so that you can drive safely for yourself, and the other drivers on the road. Keep the fancy appearance lighting for off-road use. Poodle's adaptation looks to be one that is well done to put correct light on the road. I'd rather see 3200 Kelvin or less lighting in there, but overall that looks to be an aesthetically and functionally excellent mod.