I have a R.O.B., but I am not so sufficiently wedded to the light/dark gray color scheme that I would spend a lot of money seeking out "Stack-Up" parts. The parts for Robot Block are identical save for the color. (The same cannot be said entirely for Robot Gyro). So, anyone have a spare set of Robot Block parts which they could let go? I would need both red hands, all five blocks (red, white, blue, yellow and green) and the five white stands. I do not need the cartridge, manual, tray or box.