Func as selector

gistfile1.cs

using System;

public class Program
{
	public static void Main()
	{
		Brush brush = new Brush();
		brush.ChooseColor(c => c);

		Console.WriteLine("Choose Default: {0}", brush.Color);

		brush.ChooseColor(c => Color.Red);
		
		Console.WriteLine("Color Selected: {0}", brush.Color);		

		Console.WriteLine("Press <enter> to close.");
		Console.ReadLine();
	}
}

public enum Color
{
	None,
	Red,
	Orange,
	Yellow,
	Green,
	Blue,
	Violet
}

public class Brush
{
	private Color color;

	public Color Color { get { return this.color; } }

	public void ChooseColor(Func<Color, Color> colorSelector)
	{
		// Yellow is the default
		this.color = colorSelector(Color.Yellow);
	}
	
}