There is as I put the whole background of a treeview item with the background color or is not possible, it is just like the picture above?
I'm having some difficulty understanding your request. If you set FullRowSelect to true the node extends across the entire control, and the background color would be applied across that entire area.
I know. I could do this.Wonder if there is any way to stop the whole line with a colored background instead of leaving only the part where you have colored text.
Assuming you are asking whether it is possible to set the background color for individual nodes: the answer is yes, using the UltraTreeNode.Override.NodeAppearance.BackColor property.
Nothing ?