it seems on the complimentary version you can't change the weather icons to a new set even if you have them on your SD card. I grabbed it to move it over to appworld so I can stop using mobihand but I may have to go back to using the other version just so I can change the icon set.
Does everyone have 2 icon sets, default and classic? I do, but I don't know if it's because I previously downloaded classic or not. At any rate, I can change between them FWIW. I don't generally use other icon sets, however.
Just a heads up, after installing it from App World, I also noticed the auto-updates quit. I then uninstalled then re-installed via BB App World, Rebooted, then set all the BeWeather Permissions to "Allow", followed by another reboot. And voila! Auto-updates started working again for me.