Configurable mini macro KeyBoard (Based Leonardo Pro Mini)

English:
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I was searching a mini macro keyboard to play OSU!, but to use normally too, so I need it to be configurable.
All options I saw can be configured one time before burn the code. With QMK or similar.
This version can be configured with a Java application all the times you like after burning the base code only one time, and with no modifications!
The configuration can be persisted between restars, or temporal. Like you please.

Java application: https://github.com/rotura/ArduinoMacroController. Just go to "Releases" and download the last "ArduinoMacroController.jar".
Arduino code: https://github.com/rotura/ArduinoMacroKeyboard. Just download the "ArduinoMacroKeyboard.ino" file and install the HID-Project library (instructions on the link).

The keys and RGB configuration is sent with the serial port, so anybody that like to create its own app can do it. The commands are in the github page for the arduino code.
I upload here a version of the .jar and .ino, but