public void TweenColor(Color c1, Color c2, float duration)
 {
     //IL_0006: Unknown result type (might be due to invalid IL or missing references)
     //IL_0019: Unknown result type (might be due to invalid IL or missing references)
     ShortcutExtensions.DOColor(m_material, c1, "_Color1", duration);
     ShortcutExtensions.DOColor(m_material, c2, "_Color2", duration);
 }