The whole point of us not giving the original, hard copy of the graphics away is to stop people misusing it. If any old Tom, Dick and Harry has a copy, then who says that they won't misuse it... Do you think McDonalds just give out their source files freely? Nu uh. Same concept here.
Feel free to copy it, but at least do it accurately
Then, if you do misuse it, we haven't given you permission and we can hunt you down