How do i apply a theme to my portable apps menu?

you want to apply, should be located in a zipfile. Extract this somewhere on your computer where you can find it. Navigate your usb device to: X:\PortableApps\PortableAppsMenu\App\DefaultData\Theme with being your root directory. The Theme folder contains the theme. Make a back-up of the old theme, in case you want to revert back to the original theme. After backing up, copy these files: "background, background top and drive space slider bar" from the folder you extracted and paste them into the theme folder. This WILL copy over the original themes, so back up is a nessesity. Once they are copied over, close your menu completely and reopen it, from
"My Computer" and your new theme should appear.