public property mode as String:
Active selection mode.
Use ColorPicker.RGB, ColorPicker.HSV, ColorPicker.HSL, ColorPicker.WHEEL, or ColorPicker.SPECTRUM. Unknown values fall back to RGB.
ColorPicker.RGB
ColorPicker.HSV
ColorPicker.HSL
ColorPicker.WHEEL
ColorPicker.SPECTRUM
picker.mode = ColorPicker.SPECTRUM