ColorPicker
This control enables the selection of a color.
You can customize it's behaviour through ShowControls, ShowHexSummary, ShowRgbControls, ShowHexControls, ShowHsvControls.
<yui:ColorPicker ID="cp" ShowWebsafe="true"
ShowControls="true" ShowHexSummary="true"
ShowRgbControls="true" Color="ActiveBorder"
ShowHexControls="true" ShowHsvControls="true"
runat="server" CssClass="colorPickerContainer" />