qmk_firmware/keyboards/handwired/promethium/rgbsps.h

void rgbsps_set(uint8_t index, uint8_t r, uint8_t g, uint8_t b);
void rgbsps_setall(uint8_t r, uint8_t g, uint8_t b);
void rgbsps_turnoff(void);
void rgbsps_send(void);