Version 1.90 adds some customisation options to the theme for those that do not like the default appearance of the drop-down menus. There are two options available, one to hide the drop-down menus and another to hide the icons associated with each item on the drop-down menu. The updated theme can be downloaded from here.
These configuration options can be set in the theme-stressfree/config file after the theme has been installed. By default both options are set to on (display):
enable_dropdowns=1
enable_menuicons=1
To disable the drop-down menu altogether set enable_dropdowns=0 or to simply hide the menu item icons set enable_menuicons=0. Below is an example illustrating the default drop-down menu on the left and on the right the same menu with the icons disabled.