Widdit Labs - a company that create lock screen apps,  has created a lock screen widget that mimics Facebook's Home theme.  This is the original, stripped-down "Homebase Lock Screen" app, which is nicely customizable and offers quite a bit in terms of changing the look and feel of your lock screen. From the reviews, it seem the theme little buggy, feel free to install it and check for yourself.

Some of the features include being able to set a default background, pick a personal unlock icon and choose a custom unlock sound as well as being able to add screens, remove screens and re-order screens.

How to personalize your Homebase:

After you install Homebase, an icon is placed on your home screen. Click this icon to access settings. Thought the settings screen you can edit the following:

Screens

- Turn Homebase on/off
- Add screens - click the "+" icon and you can add widgets, your favorite RSS feeds and more
- Turn off screens
- Re-order screens. Touch and drag to move them around

Customize

- Set your default background
- Set your personal unlock icon. Choose an image from your phone and crop it, or use the online gallery
- Set custom unlock sound

Supported Devices:

HomeBase runs on any Android operated device 2.2 and up.

Download: Google Play Store Link