Pulsing<A, B, PULSE_MILLIS> PulsingX<A, B, PULSE_MILLIS_FUNC> PulsingL<B, PULSE_MILLIS_FUNC>
Goes back and forth between COLOR1 and COLOR2. A full transition from COLOR1 to COLOR2 and back again takes PULSE_MILLIS milliseconds.
Int
https://github.com/profezzorn/ProffieOS/blob/6f8add544c627172ad2dd698c90e5e55078a420a/styles/pulsing.h#L6