Unity笔记：逐渐改变材质球颜色

private Color a;
public Color b = new Color(0, 55, 255);

void Update () {
a = GetComponent<Renderer>().material.color;//自身颜色
if (Input.GetMouseButtonDown(0)) {
StartCoroutine("Delay");
}
}

IEnumerator Delay() {
while(GetComponent<Renderer>().material.color != b)
{
GetComponent<Renderer>().material.color = Color.Lerp(a, b, 0.5f * Time.deltaTime);
yield return 0;
}
GetComponent<Renderer>().material.color = new Color(0,55,255);
}