Gets or sets the background color at the right or bottom edge of the ruler bar.
public Color GradientBackColor { get; set; }
The following example uses a Gradient
TXTextControl.RulerBar.Colors rulerBarColors = new TXTextControl.RulerBar.Colors();
rulerBarColors.GradientBackColor = TXTextControl.RulerBar.Colors.White;
rulerBarColors.ForeColor = TXTextControl.RulerBar.Colors.Yellow;