I also would like to know the answer to this.. I want to make modifications to them in different colors, and even just recreate some to fit my needs. Then package and re-distribute them... Of course naming you as the (Original art work) I as the Image manipulator. A notice or copy rights read me did not accompany them in the Original down load... I am a graphic designer and would like to Manipulate your work (Why re-invent the wheel)lol. thank you for your response.