Here’s a mod I did of the Blackshadow Queen, one of my favorites. This one uses the same microcontroller as my MELD drivers (PIC16F1829) and runs the same firmware, with a few tweaks for linear drivers instead of the buck/boost and SEPIC used on MELD.
The mod uses 6xAMC7135 for the white channel and 1xAMC7135 for each color. The LEDs are XP-L for white, XQ-E for color, and Luxeon UV. The LEDs are on a funny arrangement that ended up working out pretty well: I sliced the top layer off of one of my LED boards, cut out a space for the XP-L, and then Arctic Silvered it to an aluminum XP star.
The stock daughter board was kept as-is, but I stripped everything off of the main board. Everything was wired free-floating, and I included a programming connector which punches through a hole in the main PCB so I can reprogram without disassembling.
The throw on white in this host is awesome, but the smooth reflector doesn’t do great mixing the colors. Here’s a video that demos my most recent MELD firmware (v2.9) in this light:
I have a more complete description of the build on my blog here: http://tterev3.blogspot.com/2014/06/blackshadow-flashlight-mod.html