public static CommandDelegate AlphaFrom(GUIText text, float startAlpha, double duration, CommandEase ease = null)
        {
            CheckArgumentNonNull(text, "text");

            return(ChangeFrom(text.ToAlphaRef(), startAlpha, duration, ease));
        }
        public static CommandDelegate AlphaBy(GUIText text, float offset, double duration, CommandEase ease = null)
        {
            CheckArgumentNonNull(text, "text");

            return(ChangeBy(text.ToAlphaRef(), offset, duration, ease));
        }