I have a treeeview which contains categories at the 0 level and sub-categories at the the 1 level.

I would like to format the treeview, so that every category appears in a separate cell (the categories will be separated by lines on the top and bottom of each cell). The categories cells will have a background color.

I want to do the same for the sub-categories, but with different color for the cells background.

Is this formatting possible, and if so how ?

Thanks.