Hey, guys... I just wanted to let you know that I updated the initial post with a few more pics.
I decided to add an accent LED to the activation box, seeing as how it was static and non-lighting since I ripped out the original Parks electronics (and tore apart that PCB! ;) ) With some technical advice from Darth Tyranus (thanks again for the great info, DT!) I wired up a single LED and ran it right off the MR board. I mounted it underneath the (originally scrolling) 10-LED bargraph. I still wanted to have multiple colors or lights in that area, but powering all of those LEDs would be too much of a drain on the power, and probably dim the Lux too much. So I simply used a blue LED and a small piece of yellow gel underneath the 10-LED block to get both green (showing through the rectangles) and a blue glow from underneath.
Unfortunately, the pics aren't the best representation. :( They don't pick up the green too well, and in person, the blue is not nearly as overpowering as it looks (it's a bit overexposed).
Thanks again to everybody for looking-- and for the compliments!