Hey, let’s make it feel like a breath, not a buzz. Start with a soft teal, something like #B0E7DA, that slowly pulses like a gentle heart beat. Put a simple circle in the corner that expands and contracts with each inhale and exhale, glowing faintly so it just lingers instead of shouting. Add a subtle haptic pulse that mimics the inhale with a light ripple and a deeper vibration on the exhale—makes it tactile, not intrusive. Keep the UI minimal, no pop‑ups, just that soft visual cue that says, “time to breathe.” That way it feels like a pause, not a notification.