Indicates the color of the horizontal grid lines for the Trends page. By default, the horizontal grid is set to 0 (black), so as to stand out against the default background color of the Trends page.
Related Variables: When setting TrendHGridColor, keep into consideration the setting of TrendAreaColor to ensure that the horizontal grid lines stand out from the background color set for the Trends page. To set the color of the vertical grid lines, refer to TrendVGridColor.
Default: TrendHGridColor = 0