It would he greatly appreciated as I cannot find it anywhere and would like to set the colors on my stick. Either Windows or Mac OS X would be appreciated.
A bit late, but better late than never they say
If you want the original, including hardware designs, java app, firmware and more…
Sparky Jr. GitHub repo
If you are simply looking for the configurator, V3 is here
Sparky Jr. Configurator Only
Lastly, if you are looking for simplicity… …there is a Sparky Jr. Chrome App