Dream Zensinsyoji is the other maker of Japanese erasers, along with the much large Iwako. We always like to get new shipments from Dream Zensinsyoji, as they do not carefully color match colors of their Japanese erasers from batch to batch.
sausalitoferry.com has many examples of color variations of the Dream Zensinsyoji Japanese erasers. The yolk in the Egg Erasers went from yellow to orange, the Tea Cup Erasers always come in new color ways and Dream Zensinsyoji has six color versions of the Ice Cream Cake. 21 versions of the Top Hat Penquins is over the top.
So in the shipment we received last week the Take Apart Fish showed a new lighter shade of blue than the previous version.
As of this writing we have only a few of the old dark blue version left. But who knows, we may see that color reappear in the future.