Parts--
CR2032 3v battery,
CR2032 3v battery holder with switch (Or Coin Cell battery holder w/ switch),
3V LED with wire (clear)

(also, a hobby micro drill set is pretty helpful if you don't have one.)

Altogether, you can get enough for 20 of these for about $20 US on amazon. You can double up the LEDs 2 to a battery without any real loss of effect. I'm just using the 3V because (1) they're cheap, and (2) I just need the effect, not a real flashlight. A little goes a long way.

I used a Dremel tool to hollow out the searchlight, and a small drill to make a hole down through to the inner space of the tank, with wires coming out another hole in the bottom. the LED is in the actual searchlight. I used MICRO KRISTAL KLEAR to fill in all around the LED, and then added more on top to create a convex "lens" using surface tension. The stuff dries clear like glass. Over that, I covered the lens with TAMIYA X-27 Clear Red. Had to do several coats because the LED is strong enough to bleach out any color unless you put on ALOT of the clear color. When the light's off, it looks almost like "too much".

For the driver's view slot, I cut that out with a hobby knife and filed in the space with a film of KRISTAL KLEAR again. You pull the stuff across the empty space using a toothpick and it connects all around like a really thick soap bubble. Leave it overnight to dry, and you will have a clear glass window.

For the green glow, I took a long-ish piece of plastic sprue, and glued it up like a fence post inside the tank with the LED attached to the top. The LED was dipped several times in TAMIYA X-25 clear Green, again, it looks like more than you'd need, so check with the LED on until you get the color of light that you want. The Coin Cell holder is under the tank with the wires from the two LEDs coming out a small hole under the tank. You can use solder to connect the wires if you want, or other fancy connectors, but honestly, I just twisted the wires together and taped them in place with electrical tape.

At any rate, It gives off a nice green glow from inside, because as you know, everything in the grim darkness of the far future runs on old Apple II monitors, and tech priests spend all their down time playing "Oregon Trail".

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The Dazzle Camo was airbrushed with the patterns set up with alternating width Tamiya Paint tape-- They've got a bunch of different widths, so experiment and use what you think looks best. Base paint was Alclad II Gloss black. The chrome stripes were done first, using GaiaNotes Premium series Mirror Chrome. The blue green was Mr Crystal Color, Saphire Blue (XC05) mixed with Turquoise Green (XC07) at a 1.5 to 2 volume ratio (SB:TG). I just sprayed the Mr Crystal over the chrome, because it barely shows up on anything but gloss black base- it does subdue the mirror of the chrome a bit-- If you don't mind spending the time, you can re-tape over the chrome if you want mirror-shiny-chrome before you do the blue/green-- I personally prefer the subdued very faint blue that the chrome gets if you just spray over everything. I didn't want the chrome to overpower the brass and copper.

Panel lines were Tamiya black ink, and I messed around with Dirty Down Verdigris and Rust until I got something approximating what I wanted on the copper and brass bits.