String extension methods for Unity Richtext. Color, Size, Bold and Italic.

StringExtension.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

/// <summary>
/// Extension methods for string.
/// </summary>
public static class StringExtension{
	public static string Bold(this string str)
	{
		return "<b>" + str + "</b>";
	}

	public static string Italic(this string str)
	{
		return "<i>" + str + "</i>";
	}

	public static string Size(this string str, int size)
	{
		return string.Format("<size=\"{0}\">", size) + str + "</size>";
	}

	public static string Aqua(this string str)
	{
		return AddColorTag (str, "aqua");
	}

	public static string Blue(this string str)
	{
		return AddColorTag (str, "blue");
	}

	public static string Black(this string str)
	{
		return AddColorTag (str, "black");
	}

	public static string Brown(this string str)
	{
		return AddColorTag (str, "brown");
	}

	public static string Cyan(this string str)
	{
		return AddColorTag (str, "cyan");
	}

	public static string DarkBlue(this string str)
	{
		return AddColorTag (str, "darkblue");
	}

	public static string Fuchsia(this string str)
	{
		return AddColorTag (str, "fuchsia");
	}

	public static string Green(this string str)
	{
		return AddColorTag (str, "green");
	}

	public static string Grey(this string str)
	{
		return AddColorTag (str, "grey");
	}

	public static string LightBlue(this string str)
	{
		return AddColorTag (str, "lightblue");
	}

	public static string Lime(this string str)
	{
		return AddColorTag (str, "lime");
	}

	public static string Magenta(this string str)
	{
		return AddColorTag (str, "magenta");
	}

	public static string Maroon(this string str)
	{
		return AddColorTag (str, "maroon");
	}

	public static string Navy(this string str)
	{
		return AddColorTag (str, "navy");
	}

	public static string Olive(this string str)
	{
		return AddColorTag (str, "olive");
	}

	public static string Orange(this string str)
	{
		return AddColorTag (str, "orange");
	}

	public static string Purple(this string str)
	{
		return AddColorTag (str, "purple");
	}

	public static string Red(this string str)
	{
		return AddColorTag (str, "red");
	}

	public static string Silver(this string str)
	{
		return AddColorTag (str, "silver");
	}

	public static string Teal(this string str)
	{
		return AddColorTag (str, "teal");
	}

	public static string White(this string str)
	{
		return AddColorTag (str, "white");
	}

	public static string Yellow(this string str)
	{
		return AddColorTag (str, "yellow");
	}

	public static string Color(this string str, string color)
	{
		return AddColorTag (str, color);
	}

	static string AddColorTag(string str, string color) {
		return string.Format("<color=\"{0}\">", color) + str + "</color>";
	}
}