public static class DebugConsole {
        private static bool Writing = false;

        /// <summary>
        /// Write an object's string representation to the console
        /// </summary>
        /// <param name="color">Color to write in</param>
        /// <param name="src">Originating object</param>
        /// <param name="format">String format</param>
        /// <param name="args">String format args</param>
        public static void Write(ConsoleColor color, object src, string format, params object[] args) {
            _write(color, src, String.Format(format, args));
        }
        /// <summary>
        /// Write an object's string representation to the console with a 

        /// </summary>
        /// <param name="color">Color to write in</param>
        /// <param name="src">Originating object</param>
        /// <param name="format">String format</param>
        /// <param name="args">String format args</param>
        public static void WriteLine(ConsoleColor color, object src, string format, params object[] args) {
            _write(color, src, String.Format(format + "
", args));
        }

        /// <summary>
        /// Write an object's string representation to the console
        /// </summary>
        /// <param name="color">Color to write in</param>
        /// <param name="src">Originating object</param>
        /// <param name="data">Object to write</param>
        public static void Write(ConsoleColor color, object src, object data) {
            _write(color, src, data.ToString());
        }
        /// <summary>
        /// Write an object's string representation to the console with a 

        /// </summary>
        /// <param name="color">Color to write in</param>
        /// <param name="src">Originating object</param>
        /// <param name="data">Object to write</param>
        public static void WriteLine(ConsoleColor color, object src, object data) {
            _write(color, src, data.ToString() + "
");
        }

        private static void _write(ConsoleColor color, object src, string data) {
            while (Writing) {
                //Wait for the previous write operation to finish before beginning this one

                //Wait for 10 milliseconds to allow the console buffer to flush
                //once the previous write opperation finishes
                System.Threading.Thread.Sleep(10);
            }

            //Stop any other write operations from writing
            Writing = true;

            //Set restore color
            ConsoleColor bak = Console.ForegroundColor;

            //Write src name in the passed color
            Console.ForegroundColor = color;
            Console.Write(src);

            //Write the originating thread id in white
            Console.ForegroundColor = ConsoleColor.White;
            Console.Write("[{0}]", System.Threading.Thread.CurrentThread.ManagedThreadId);

            //Write the divider in yellow
            Console.ForegroundColor = ConsoleColor.Yellow;
            Console.Write("::");

            //Write the data in the passed color
            Console.ForegroundColor = color;
            Console.Write(data);

            //Restore the color
            Console.ForegroundColor = bak;

            //Allow next write opperation to continue
            Writing = false;
        }
    }

public static class DebugConsole {
        private static bool Writing = false;

        /// <summary>
        /// Write an object's string representation to the console
        /// </summary>
        /// <param name="color">Color to write in</param>
        /// <param name="src">Originating object</param>
        /// <param name="format">String format</param>
        /// <param name="args">String format args</param>
        public static void Write(ConsoleColor color, object src, string format, params object[] args) {
            _write(color, src, String.Format(format, args));
        }
        /// <summary>
        /// Write an object's string representation to the console with a 

        /// </summary>
        /// <param name="color">Color to write in</param>
        /// <param name="src">Originating object</param>
        /// <param name="format">String format</param>
        /// <param name="args">String format args</param>
        public static void WriteLine(ConsoleColor color, object src, string format, params object[] args) {
            _write(color, src, String.Format(format + "
", args));
        }

        /// <summary>
        /// Write an object's string representation to the console
        /// </summary>
        /// <param name="color">Color to write in</param>
        /// <param name="src">Originating object</param>
        /// <param name="data">Object to write</param>
        public static void Write(ConsoleColor color, object src, object data) {
            _write(color, src, data.ToString());
        }
        /// <summary>
        /// Write an object's string representation to the console with a 

        /// </summary>
        /// <param name="color">Color to write in</param>
        /// <param name="src">Originating object</param>
        /// <param name="data">Object to write</param>
        public static void WriteLine(ConsoleColor color, object src, object data) {
            _write(color, src, data.ToString() + "
");
        }

        private static void _write(ConsoleColor color, object src, string data) {
            while (Writing) {
                //Wait for the previous write operation to finish before beginning this one

                //Wait for 10 milliseconds to allow the console buffer to flush
                //once the previous write opperation finishes
                System.Threading.Thread.Sleep(10);
            }

            //Stop any other write operations from writing
            Writing = true;

            //Set restore color
            ConsoleColor bak = Console.ForegroundColor;

            //Write src name in the passed color
            Console.ForegroundColor = color;
            Console.Write(src);

            //Write the originating thread id in white
            Console.ForegroundColor = ConsoleColor.White;
            Console.Write("[{0}]", System.Threading.Thread.CurrentThread.ManagedThreadId);

            //Write the divider in yellow
            Console.ForegroundColor = ConsoleColor.Yellow;
            Console.Write("::");

            //Write the data in the passed color
            Console.ForegroundColor = color;
            Console.Write(data);

            //Restore the color
            Console.ForegroundColor = bak;

            //Allow next write opperation to continue
            Writing = false;
        }
    }

Writes text to the console in multiple colors to allow easy distinguishing between different write sources.

I use this heavily on multithreaded apps because it performs write operations synchronously, so that each write can not overlap another when writing in colors and multiple parts.

Colored console writes C#

C#