# Grasshopper2.UI.ColourPicker namespace

Assembly: [Grasshopper2](https://developer.rhino3d.com/api/gh2/assembly/grasshopper2.md)

## Classes

- [ColourLabel](https://developer.rhino3d.com/api/gh2/type/grasshopper2.ui.colourpicker.colourlabel.md): Provides a coloured label-like control which gives easy access to various types of colour input.
- [ColourPicker](https://developer.rhino3d.com/api/gh2/type/grasshopper2.ui.colourpicker.colourpicker.md): Represents the core functionality of the Grasshopper colour picker.
- [ColourPickerColourChangedEventArgs](https://developer.rhino3d.com/api/gh2/type/grasshopper2.ui.colourpicker.colourpickercolourchangedeventargs.md): Event arguments used in the ColourLabel.XXXXColourChanged events.
- [ColourPickerControl](https://developer.rhino3d.com/api/gh2/type/grasshopper2.ui.colourpicker.colourpickercontrol.md): Provides the Grasshopper colour picker embedded in an Eto control.
- [CustomPalette](https://developer.rhino3d.com/api/gh2/type/grasshopper2.ui.colourpicker.custompalette.md): Provides a system-wide square grid of colours the user is allowed to specify.
- [CustomPaletteControl](https://developer.rhino3d.com/api/gh2/type/grasshopper2.ui.colourpicker.custompalettecontrol.md): Provides access to a custom palette.
- [CustomPaletteEntry](https://developer.rhino3d.com/api/gh2/type/grasshopper2.ui.colourpicker.custompaletteentry.md): Represents a single entry in the custom palette.
- [CustomPaletteEntryClickedEventArgs](https://developer.rhino3d.com/api/gh2/type/grasshopper2.ui.colourpicker.custompaletteentryclickedeventargs.md): Event arguments used in the CustomPaletteControl.EntrySelected event.
- [ScreenSampler](https://developer.rhino3d.com/api/gh2/type/grasshopper2.ui.colourpicker.screensampler.md): Pick a colour off the screen.

## Enums

- [ColourPickerFormat](https://developer.rhino3d.com/api/gh2/type/grasshopper2.ui.colourpicker.colourpickerformat.md): Enumerates the various ways in which selected colours can be formatted as text.
- [PickerLayout](https://developer.rhino3d.com/api/gh2/type/grasshopper2.ui.colourpicker.pickerlayout.md): Enumerates the possible interface layouts of colour pickers.