Translations:New Template System in LS3.x/14/en
From LimeSurvey Manual
If you now go to the upload directory (with your file/ftp client), you’ll see that a new directory has been created: upload/themes/extends_monochrome It contains an XML file and directories, but most directories are empty. It has neither views nor CSS nor JS. But, you can still select this theme as a normal one from a survey and it will look exactly like the monochrome theme.