Mhh your pics look nice too but they use a different algoritm i think.
I see some paterns in the characters used.
It's not dependent on hue and brightness wich mine is.

it's the same patern in case of colors but the characters are just a repeating sequence.

I could add that feature too although i don't realy like it.

This project would have been fun if it weren't that buggy (to make this pics it froze constantly) and if i didn't lose the source on the computer at school wich had my work-folder erased.