The latest release of LXLE bears a few changes / inconsistencies that appeared due to component updates.
Themes are still handled by the 'customize look and feel' tool located in the preferences menu, however window borders are now soley handled by 'openbox configuration manager', as well as the number of desktops settings.
The reason is that although most system components could be and were updated to their latest version. Not all were stable / bug free with 12.04. In other words, in order to obtain the wanted features of some of the system components like lxpanel, a mix of older and newer components were needed, which lead to a couple configuration changes, like described above.