Set Value For TriStateTreeNode ForeColor does not setting

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VB

NET TreeView control does not supports tristate. So we extended the functionality and created Extentended treeview and treenode.
But when we extend treenode then ForeColor and BackColor properties of treenode are not functioning properly.

When we are trying to change ForeColor Property for Extended TreeNode at runtime then it sets the ForeColor Property to specied value but we are unable to see changes in forecolor of treenode visually

So we are unable to show color changes of extended treenode in extended treeview.

Codes for Extended TreeView and extended TreeNode were reffered from article: Tri-State TreeView control for .NET 1.1[^]

Please provide some solution for this.

Thank You
Firoj Khan