i've done wallpapers in the past that were similar. i won't say they were quite the same but random(ish) vector art tends to come out that way - not sure what the style is called but you'll find quite a lot of it.
i was intending to edit them and upload them to my portfolio site (when it is eventually created) so i'll let you know when it happens.
perhaps the only difference with what i did was that the images were darker - i don't like bright wallpapers.
