My RGBdigit project is a combination of a standard 1″sevensegment display with multicolor functionality.
The result is a 1″ sevensegment with 16milion colors for each segment and only 3 wires in and 3 wires out.
An other name for the project could be neopixcel-sevensegment or 7sevensegment V2.0. See RGBDigit.com for more detail.