Don't like the color? Want some sound effects? Well then DERIVE IT! Make your own version, and even sell it the catalog for a small markup over my original, and you can keep the extra profits for yourself! You can express yourself AND earn credits at the same time. How's that for a sweet deal? You'll need a full account on IMVU, as well as a copy of Previewer. You can find out more about Deriving on the IMVU's Education Center. Below are the templates you'll need to get started:

This is the Color Map of the Energy Beam:

This is the Opacity of the Energy Beam:

This is the Color Map, and Opacity Map, of the Fireball:

This is the Opacity Map for the Sparkles that get sucked into the Fireball.
(The Color Map for the Sparkles is just a solid white version of this image):

This is the Color map for the flower-like Rings that appear around the Energy Beam when it's fired:

This is the Opacity Map for those Rings:

To add sound, I highly recommend you download and use Audacity. It's a free sound editing tool that can export out OGG sound files. OGG sound files compress down to less then 1/10th the file size of WAV files. SO USE OGG FILES!!! You can download it here:
https://sourceforge.net/projects/audacity