Load the DigiUSB→DigiBlink example onto your Digispark
Attach the RGB Shield
Grab the example programs here: https://github.com/digistump/DigisparkExamplePrograms Or use the command line tools provided with the Digispark IDE version to easily roll your own
DigiRGB allows you to change the color of the connected DigiBlink
As seen here:
DigiRGBMail is a mailinator addition for DigiRGB - it checks for emails coming to a specified mailinator account and changes the LED to the color in the subject line of the latest email.
Digispark - CheerLights - connects the Digispark to the Cheerlights.com project - changing it to the latest cheerlights color as long as it is running in your tray/menu.
NOTE: These are all written in python but have not been tested completely across all OSes - we welcome any and all fixes and binaries here: https://github.com/digistump/DigisparkArduinoIntegration