Background color of the controls container.
Color of the duration text.
Color of the error text.
Color of option label text.
Color of the record button circle.
Color of the pulsing recording indicator dot.
Color of the stop button.
Thumb color of the option switches.
Track color of the option switches when on.
Color overrides for the RecordingControls component.
All keys are optional. Unset keys fall back to the built-in defaults.