Color picker definition - layout of the color picker
        /// <summary>
        /// Initializes a new instance of the <see cref="Paint.ColorPicker"/> class.
        /// </summary>
        /// <param name='graphicsDisplay' Contains all the graphics for rendering the tools />
        /// <param name='colorPickerDefinition' The layout definition of this control/tool />
        public ColorPicker(IGraphicsDisplay graphicsDisplay, ColorPickerDefinition colorPickerDefinition)
            : base(colorPickerDefinition.BackgroundColor, 
		       colorPickerDefinition.BorderColor, 
		       colorPickerDefinition.BorderWidth, 
		       graphicsDisplay, 
		       colorPickerDefinition.Bounds)
        {
        }