Wrapping paper

The following sheet of wrapping paper is somewhat of an oddity. It is printed on an extremely thin stock ( roughly 10 lb. paper), resembling a form of calendared tissue paper, a odd choice for a wrapping paper.

Another oddity is the design. The above example is the only example of wrapping paper that I have seen that does not depict something like flowers or puppies, but rather is an abstract design. It is hard to say what the maker was intending this paper to represent ( perhaps marble?), or if it was intended to resemble anything at all.

If anything can be said of this paper, it is printed. However, in the dark areas of the paper, we find a curious pattern:

How this pattern came to be I have no idea.