This is the evolution of my project ScrolLED watch which uses single color SMD LEDs to create the 12x6 display matrix. This project uses RGB LEDs (hence the name. Also the Silicon Valley reference!) to create multicolor display matrix. I'm planning to use 0606 SMD RGB LEDs which have a common anode configuration. The enabling factor for this project is the LED matrix PCB layout such that all LEDs are individually addressable and routable in a 2 layer (double-sided) layout. The LEDs are multiplexed. Partially in the charlieplex configuration. There is adequate redundancy in multiplexing such that atleast 12 LEDs out of 72 in the matrix can be lit at a time.

Todo items:
Verify the multiplexing scheme in LTspice
Figure out how to drive 84 inputs (which needs to be tri-stateable)
Integrate the matrix into a watch form factor and design PCB
Try to compact the matrix (and also respect DRC). Right now, the LED to LED pitch is 120 mils. Try 110 mils and 100 mils