Hi Máirín and all!
Oops, I forgot :( to upload source v3 [1]. New version [2] with minimal changes, I tried to remove this effect.
[1] - http://inkscaper.fedorapeople.org/Fedora17/Wallpaper/v3/
[2] - http://inkscaper.fedorapeople.org/Fedora17/Wallpaper/v3/F17-fireworks-night-v3-1.png
Thanks,
Alexander.