Benz NTG5
This theme was introduced in updates Ksw-P-Userdebug_OS_v3.9.8-ota and Ksw-Q-Userdebug_OS_v1.4.7-ota, therefore it might not be available to activate on earlier firmwares.
To make this theme available for selection in your factory settings, you might need to modify your factory_config.xml file. Find the <SupportUIList /> section and add the following line: <Item id="1" name="Benz_NTG5" display="Benz NTG5" />. More information and examples can be found in factory settings section.