heh, heh...
no one noticed my sloppy mistake ... I had used the Blue variable twice instead of Green, resulting in RBB not RGB.
corrected now.
you can tap on each color to get a new random color, or on the RESET button to change all colors.
this app is similar to the random color selection app included in my book GOOGLE APP INVENTOR and available on Google Play. I've found it quite useful in designing app interfaces.
again, finishing up how to use this one and I'll post it shortly with code.
--Ralph