IEnumerator ColorLerp(int id)
{
	float endTime = Time.time + fadeTime;
	float step = 0;

	while (Time.time < endTime)
	{
		glows[id].color = Color.Lerp(Color.clear, Color.white, step)
		step += Time.deltaTime; // This would only work if you're lerping over 1 second, otherwise you probably wanna divide by your fadeTime somewhere
		yield return null; // Skip one frame, then loop again..
	}

	// Step should be 1 here??

	endTime = Time.time + fadeTime;

	while (Time.time < endTime)
	{
		glows[id].color = Color.Lerp(Color.clear, Color.white, step)
		step -= Time.deltaTime; // Decrementing instead!
		yield return null; // Skip one frame, then loop again..
	}
}