my illuminated midplate is being made at the moment. I am attempting it using the following parts:
1 sheets of 3mm opal (white 25% transparent) acrylic for top.
1 sheet of 10mm clear acrylic for the middle sandwich.
1 sheet of Mirror acrylic for the bottom sheet to fully reflect all light upwards. (this stuff looks awesome)
1 bitfenix LED strip.
I have the top and bottom sheets cut around 20mm wider to house the LED strip down the side.