RgbArg<ARG, DEFAULT_COLOR>
This is used to create templates that can be configured dynamically. These templates can be assigned to presets from WebUSB or bluetooth. See style_parser.h for more details.
https://github.com/profezzorn/ProffieOS/blob/6f8add544c627172ad2dd698c90e5e55078a420a/styles/rgb_arg.h#L6