C# colorized console output

colorizedoutput.cs

using System;
using System.Collections.Generic;

namespace coloroutput
{
	class MainClass
	{
		public const ConsoleColor DEFAULT = ConsoleColor.White;

		public static void Main (string[] args)
		{
			// To use:
			// put ! before words that should be red
			// put @ before words that should be blue
			// put # before words that should be green
			Console.ForegroundColor = DEFAULT;
			WriteColorLine ("@You !see some #cabinets. What do?");
			WriteColorLine ("@(this entire text should be colored) while this should not");
			WriteColorLine ("! that should not color anything, and in fact, should just be a single exclaimation point.");
			WriteColorLine ("this is a !command");
			WriteColorLine ("this is a @person");
			WriteColorLine ("this is a $place");
			WriteColorLine ("this is a #thing");
			Console.ReadKey (true);
		}

		public static void WriteColorLine(string text, params object[] args)
		{
			Dictionary<char, ConsoleColor> colors = new Dictionary<char, ConsoleColor> {
				{ '!', ConsoleColor.Red },
				{ '@', ConsoleColor.Blue },
				{ '#', ConsoleColor.Green },
				{ '$', ConsoleColor.Magenta }
			};
			// TODO: word wrap, backslash escapes
			text = string.Format(text, args);
			string chunk = "";
			bool paren = false;
			for (int i = 0; i < text.Length; i++) {
				char c = text [i];
				if (colors.ContainsKey (c) && StringNext(text, i) != ' ') {
					Console.Write (chunk);
					chunk = "";
					if (StringNext (text, i) == '(') {
						i++; // skip past the paren
						paren = true;
					}
					Console.ForegroundColor = colors [c];
				} else if(paren && c == ')') {
					paren = false;
					Console.ForegroundColor = DEFAULT;
				} else if (Console.ForegroundColor != DEFAULT) {
					Console.Write (c);
					if(c == ' ' && !paren)
						Console.ForegroundColor = DEFAULT;
				}
				else
					chunk += c;
			}
			Console.WriteLine (chunk);
			Console.ForegroundColor = DEFAULT;
		}

		public static char StringPrev(string text, int index)
		{
			return (index == 0 || text.Length == 0) ? '\0' : text[index - 1];
		}

		public static char StringNext(string text, int index)
		{
			return (index < text.Length) ? text [index + 1] : '\0';
		}
	}
}