We have a campaign up on Indiegogo - https://www.indiegogo.com/projects/fyber-labs-light-square-flexible-rgb-led-panel/
This is to submit an order of about 100 panels. We plan to get around 80 orders and order the rest to use ourselves and to sell on Tindie. This is for the 5" 64x APA102C 16mm spaced flexible PCB design.
Here is the hand etched version running a rainbow pattern:
Chasing color pattern at full brightness: