Tint2 is the "standard" panel in openbox. The gui or graphical user interface of Tint2 is a super tool to select the current themes but also a great tool to create new themes.

We change and apply some of the settings. All settings you change in the gui of tint2 will be saved in

~/.config/ting2/tint2rc

If you want to keep your created theme, you need to rename your own theme but you shoud add the extension : .tint2rc. That is what I had forgotten during the video.