OptionalcalendarOptionalextendedWash behind extended-hours bars; null leaves them unshaded. Default: a faint tint of the theme's axis text.
OptionalpostWash behind post-close bars; null leaves them unshaded. Default: a faint amber.
OptionalpreWash behind pre-open bars; null leaves them unshaded. Default: a faint tint of the theme's line colour.
OptionalvisibleDraw at all. Default true.
The hours to shade by. Absent or null, the chart's own calendar is read each frame (
chart.setSessionCalendar,Instrument.applyTo), so the shade follows the instrument and clears when the chart drops its hours.