private static void HandleTransformOutlineAlphaTag(AssTagContext context, DateTime startTime, DateTime endTime, float accel, string arg)
        {
            if (!context.Style.HasOutline)
            {
                return;
            }

            if (context.Style.OutlineIsBox)
            {
                BackColorAnimation anim = FetchColorAnimation(context, startTime, endTime, s => s.BackColor, (s, e, c) => new BackColorAnimation(s, c, e, c, accel));
                anim.EndColor = ColorUtil.ChangeColorAlpha(anim.EndColor, 255 - (ParseHex(arg) & 255));
            }
            else
            {
                HandleTransformShadowAlphaTag(context, ShadowType.Glow, startTime, endTime, accel, arg);
            }
        }
        private static void HandleTransformOutlineColorTag(AssTagContext context, DateTime startTime, DateTime endTime, int accel, string arg)
        {
            if (!context.Style.HasOutline)
            {
                return;
            }

            if (context.Style.OutlineIsBox)
            {
                BackColorAnimation anim = FetchColorAnimation(context, startTime, endTime, s => s.BackColor, (s, e, c) => new BackColorAnimation(s, c, e, c));
                anim.EndColor = ParseColor(arg, anim.EndColor.A);
            }
            else
            {
                HandleTransformShadowColorTag(context, ShadowType.Glow, startTime, endTime, accel, arg);
            }
        }