ToolTipText -

ElementBackColor gridred.htm  - Set low text item color. Opp.Click for color dialog - Default Red to Black.

Use this slider to dynamically change within a limited range from the basic background color for elements. The color given to an element is determined by its position on the Z-axis.
To set the basic color for the background elements within the selected color or monochrome table use the Home position of this GridRed color slider to bring up a color dialog box.