Hello,
we developed a new RGB LED Shield with 54 LEDs. It is easy to use and has 24bit color (~6Million).
Our easy to use library will be open source.
The shield fits on a standard Arduino UNO and comes with a few sample sketches like snake, tetris or a pov textwriter.
If you like, you can support us: https://www.indiegogo.com/projects/pixelstorm-the-arduino-led-shield/x/6817916
Mike