From nookDevs

Part of the NookColor portal

These instructions will allow you to set an installed live wallpaper as your NOOKcolor background. This guide assumes that you have already rooted the device and have ADB access. Not all wallpapers I tried have worked. I suspect that the stock libEGL libraries may be incompatible or outdated. Further research is necessary. Here is a list of working and non-working stock live wallpapers.

Working:	Not working:
Many	Galaxy
Polar clock	Grass
Spectrum	Nexus
VU meter	Water
Waveform

1. Download LiveWallpapers_NC.zip (v2.1-update1)
2. Extract the zip file.

   unzip LiveWallpapers_NC.zip

3. Make sure the apk file is set with the proper permissions (rw-r--r--).

   chmod 644 LiveWallpapersPicker.apk

4. Open shell and remount /system as writable.

   adb shell
   # mount -o remount,rw /dev/block/mmcblk0p5 /system
   # exit
   

5. Use ADB to transfer the files to the proper directories on NOOKcolor.

   adb push LiveWallpapersPicker.apk /system/app/LiveWallpapersPicker.apk
   adb push libRS.so /system/lib/libRS.so
   adb push librs_jni.so /system/lib/librs_jni.so
   

6. Reboot NOOKcolor.

   adb reboot

7. When setting a wallpaper, you should now have the option to select Live wallpapers. You can find/download live wallpaper APKs from sources such as SlideMe.