A modification of my ColorBlink02.ino sketch. This doesn't use the RF capabilities of the RFduino.
It blinks the RGB LED when a button on the Shield is pressed. One color when button A is pushed and a second color when button B is pushed. (Button A and button B are indicated on the shield.)
I couldn't find the pin numbers for the buttons, but it was fairly easy to find which pin connects to which button.
Button A is pin 5, and Button B is pin 6.