void ColorizeButton() { if (selectedDefender) { Defender defender = selectedDefender.GetComponent <Defender>(); if (star.EnoughStarsFor(defender.price) == Stars.Status.ENOUGH_STARS) { GetComponent <SpriteRenderer> ().color = COLOR_ACTIVATED; } else { GetComponent <SpriteRenderer> ().color = COLOR_ACTIVATED_NOT_ENOUGH_STARS; } } }