For the past few days I've been working on this little project to port/demake Lively Wallpaper but for Chrome OS. Well now the project is basically complete, and I was able to get regular live wallpapers and interactive/dynamic ones working too.
To install/use it, go to the link below, go to the Chrome menu (3 dots in the corner), click More tools, and click Create shortcut. Then make sure to enable "Open as window", then click create. Now click on a wallpaper, press the fullscreen button on your keyboard, and you're done. You can move your mouse to the bottom of the screen to access your taskbar and to switch to your other apps. When an app is overlaying Lively, it won't autohide but when you click on the wallpaper, it will switch to Lively and hide the taskbar.