Apple - Symbolic link icons don't update

I had this problem and the following seems to have resolved it. I'm not sure if steps 2 and 3 are both required so you can try one and then the other if you prefer.

1. Remove symbolic links

2. Clear your icon cache:

   sudo find /private/var/folders/ -name com.apple.dock.iconcache -exec rm {} \;

3. Clear your caches:

   sudo rm -rf /Library/Caches/*

   sudo rm -rf ~/Library/Caches/*

4. Restart

5. Recreate symbolic links