Adjusting speed, size, and colors

You shape the visual from the Control Panel, and changes apply live (and mirror to the client):

• Tempo (speed) — how fast the target moves, in Hz (cycles per second). Range 0.5–2.5 Hz, default 1.0 Hz. One cycle is a full left→right→left sweep, so 1.0 Hz is about one sweep per second.
• Ball Size — the target's size in pixels. Range 15–80 px, default 30 px.
• Ball Color — the target's color. The full palette is free on every tier.
• Canvas Background — the backdrop behind the target. The full set is free on every tier.