To people who were asking about different backlight colors:
- Board designed to use Amber backlight only with LED connected in series - see schematics
- You can't use RGB backlight since it has a different connections
- You can try to use WHITE backlight, but you will have to make some trace changes to convert serial connection to parallel. Serial LED connection will requre 6V that board does not have. I don't have a white backlight to test.