Change of theme
Open your file manager, in your Home folder, create a .themes folder. The folder will become hidden after it is created. You will have to press “Ctrl + H” to display hidden files.
Go to gnome-look.org to search for gtk2.0 themes or box-look.org to search for Openbox themes. For this example, I will use the Ambiance theme that is used in Ubuntu. Go to Gnome-look.org and download the Ambience GTK theme. Extract the tar file. You should see two zip files: theme and icon. Extract the content of the theme zip files to the .themes folder that you just created. Go to “Preferences -> Customize Look And Feel” (older version of Lubuntu is “Preferences -> Appearance“). On the window that show up, you should see the newly installed theme on the left pane. Click on the new theme follow by the “Apply” button.
Your window background and style will change instantly to the new theme (note: the window border and panel will remain unchanged).
Change of icon set
Still on the same window, click on the Icon Theme tab. Click the Install button.
Choose the tar.gz or tar.bz icon theme file that you have downloaded. Note: In this example, the Ambiance Icon theme is in zip file, which is not recognized by the system. An easier way is to extract the content of the zip file to “/usr/share/icons“ Your new icon theme should now appear in the Look and Feel window. Choose your favorite icon theme and click Apply.
Change the Panel background
Right click on an empty in the bottom panel and select “Panel Settings”. Click on the Appearance tab and select “System theme”. Click Close. (Note: In some instances, you might have to select the Solid color (with opacity) option before selecting the System theme option)
Change of window border
If you have noticed, changing the theme does not change the window border. We need to apply a .obt (OpenBox Theme) file to change the window border. Go to box-look.org and download the Ambiance obt file. Double click the downloaded .obt file. It will install itself to the system and open the Openbox configuration Manager. That’s it.
Change of desktop wallpaper
On the desktop, right click and select Desktop Preference. You can change your wallpaper from here.
Alternatively, install feh to set any image as wallpaper from the file manager. This is the final result:
Wrapping up
While the above procedure is for the Ambiance theme, it should work for all other themes as well. Enjoy.
