Unity 2D Sprite Trail Object

DashTrailObject.cs

using UnityEngine;
using System.Collections;

public class DashTrailObject : MonoBehaviour
{
	public SpriteRenderer mRenderer;
	public Color mStartColor, mEndColor;

	private float mDisplayTime;
	private float mTimeDisplayed;
	private DashTrail mSpawner;

	// Use this for initialization
	void Start ()
	{
		
	}
	
	// Update is called once per frame
	void Update ()
	{
		mTimeDisplayed += Time.deltaTime;

		mRenderer.color = Color.Lerp (mStartColor, mEndColor, mTimeDisplayed / mDisplayTime);

		if (mTimeDisplayed >= mDisplayTime)
		{
			mSpawner.RemoveTrailObject (gameObject);
			Destroy (gameObject);
		}
	}

	public void Initiate (float displayTime, Sprite sprite, DashTrail trail)
	{
		mDisplayTime = displayTime;
		mRenderer.sprite = sprite;
		mTimeDisplayed = 0;
		mSpawner = trail;
	}
}