A Nintendo Switch homebrew app to change the color of the Joy-Con controllers. Comes bundled with default themes but you can easily add your own.

Copy the JC-color-swapper directory to sdmc:/switch

You can add custom themes by editing profiles.json. You can add new entries and modify existing ones, just make sure that you're using the same formatting (hexadecimal values of length 6).

Use my webpage to generate new profiles and add them to profiles.json : https://hamletdufromage.github.io/JCpicker.html