I can reply to some of your stuff

as for your dash and placement of the head unit you.
1. Must use a flat bar to pry the beauty-ring around the shifter after that you remove the two screws right above top of it.
2. Once you have done to above pull the center thermostat piece (its should come out with a gentle pull) after that remove the screw that is right behind that.
3. The console piece is one big piece now from the beauty ring that you removed to the radio itself and it take a little finesse to remove it all with a flat bar.
4. Once you have completed that just get the installation kit and wiring harness and if i remember correctly there were a couple of screws on the radio itself but its nothing you wont be able to see on your own.
As far as the green lights go they are integrated into the plastic housing. You can remove them by twisting them counter clock-wise. I removed mine with a pair of needle nose pliers and some tape around them so i would not damage the bulb.
You can try a number of things in hopes of changing the color i went with a method of purchasing some of the leds that auto-zone had that were peal in stick. However, it is rather frustrating because you must either splice into a accessory wire such as the because it only comes on when the car is on or run a constant wire and a toggle switch in between so that you can turn them on when you wish (pain in the butt with the toggle switch method if you do not want to deal with finding a nice place to hide it).
Another issue that you will run into with those lights is that the are mirrored for the depth of the factory lights. The plastics have reflectors on them and if the new lights are not the same depth you will no get light to the outer sides of the switches.
All in all, its a pain in the ass trying to replace those light and so far i have not ran across any that would simply plug right in to where to factory lights were.
I am going to try to use the factory housing light and run a different LED bulb through it and give it a try. Sorry if the post ran a little long on this lol its something have been trying to tinker with for a little while now.
The lights with the blue hue to them come in all sizes for your high beams, low beams, and the fogs as well.
I think they are called HID lights you can purchase them off of ebay or your local auto store only downside to making the fogs HID lights is that you will be blinding the on coming drivers.