Anything that's black or blue or rainbow colored either has been photoshopped beyond belief or is a photograph of a silk flower that has never grown in nature.
There are deep purple and dark red roses in nature, and you could have fun seeing all of the colors their seeds would produce, but I personally wouldn't buy anything from a scam artist. There's no guarantee that these people will send you anything resembling the roses in their pictures. They'll probably send you seeds from a species rose, which won't produce a variety of colors. Couldn't you save the money and collect rose hips on your own? Aren't there any roses with rose hips in your neighborhood? The seeds are inside the hips.
