Extension to Unity3d Color and Color32. Allows easy converting of Color to hex string.

ColorExt.cs

using UnityEngine;
using System.Collections;

public static class ColorExt {

	public static string ToHexString(this Color32 c){
		return string.Format ("{0:X2}{1:X2}{2:X2}", c.r, c.g, c.b);
	}
	
	public static string ToHexString(this Color color){
		Color32 c = color;
		return c.ToHexString();
	}
	
	public static int ToHex(this Color32 c){
		return (c.r<<16)|(c.g<<8)|(c.b);
	}
	
	public static int ToHex(this Color color){
		Color32 c = color;
		return c.ToHex();
	}
}