Category / Section
How to customize the colors used for bracket highlighting and indentation guidelines in WinForms SyntaxEditor (EditControl)?
Customize indent appearance
You could specify custom Colors for the indentation guidelines and the bracket highlighting block using the IndentLineColor and IndentBlockHighlightingColor properties respectively.
C#
this.editControl1.IndentLineColor = Color.Khaki; this.editControl1.IndentBlockHighlightingColor = Color.IndianRed;
VB
Me.editControl1.IndentLineColor = Color.Khaki Me.editControl1.IndentBlockHighlightingColor = Color.IndianRed
Reference link: https://help.syncfusion.com/windowsforms/syntaxeditor/editing#customize-indent-appearance