Hi there,
Yes the zip file unzipped correctly. I then removed the zip file itself from the "Themes" folder and left the resultant unzipped CleanBG folder in the Themes directory. Within the CleanBG folder, there is indeed a number of subfolders and files. Total size of the folder is c.a 58mb. I have attached a pdf image of the two option screens "Views" and "Images" to show what is currently selected/configured in my BB. I did notice that on the tutorial video there were slightly different menu options under the "Views" menu (perhaps a different version of BB?). My current version of Launchbox is 7.1, downloaded around one week ago. The only other modification i have done on the BB interface is to try out a new intro video (splash screen).
Cheers
BigBox_Config.pdf