If you are using SuperbrightLEDs.com you will figure out which connection style you would like (ie 194) and then figure out how many LEDs you want and find the corresponding model, then in the drop down box, you can select colors such as the blue you are looking for.

I had 6 LED bulbs in each of my map lights and I just replaced them with 'cool' white, which is very similar in color to a 6K HID bulb - nice, clean light. I thought the blue looked good lighting up the silver accents, but think the white bulbs are much more classy looking. Unless it is something like Frank's roadster. I put blue bulbs in his maps and changed the license bulbs to cool white and it looks GREAT, but his blue lighting accents are everywhere, including lit sills and windscreen.....