'**SUMMARY**
This method returns a gray scale version of the image. It makes everything look like an old movie.
**RETURNS**
A grayscale SimpleCV image.
**EXAMPLE**
>>> img = Image("lenna")
>>> img.grayscale().binarize().show()
**SEE ALSO**
:py:meth:`binarize`'

def grayscale(self):

    return Image(self._getGrayscaleBitmap(), colorSpace=ColorSpace.GRAY)
