In April we will see the hedgehog Japanese erasers from Iwako in six colors
Ty who is repackaging Iwako Japanese erasers under the Ty brand is also coming out with two colors. Ty and Iwako will both offer the same brown color hedgehog Japanese eraser. Ty's pink hedgehog Japanese eraser appears to be a darker shade than Iwako's.
So when we have the hedgehog Japanese erasers from Iwako and Ty in stock, there will be seven colors to be had.