Cops don't like them. Some states say they can't be forward facing, some say they can be forward facing but cannot flash, some say don't use them at all or you'll get a ticket. Some say the Stig can only see in 50 Shades of Blue, and that the sound of his heart beat is that of a 426 Hemi.
Now that that's all out of the way :P here are a few pictures for you. Before I ever lowered it I installed Blue LED's into my revers and cargo lamps. Didn't do tag lights, they've actually been upgraded to a "Cool White" like my interior in the pics. Didn't want to draw to much atention to myself. I already have painted tail lights and cross my fingers during the day when I see a cop behind me. Figured I'd do my best to keep my truck somewhat legal at night lol
Blue LED Fogs. LED's are installed above the housing with the lights aimed at the reflectors.
Also until I figure out something better to do with my fuse box, I cut a hole in it, filled it with plexi glass and threw a light in there as well.
As far as color temp lights, go with 6000k. I have 8k in my lows and don't like them, light output at night isn't all that great. 6k is perfrect for a VERY light blue almost bright white color range and the output on the road is great. I have 6k fogs and highs with 8k lows and the fogs make my headlights pointless.