'**SUMMARY**
This function returns a tuple representing the average color of the blob.
**RETURNS**
A RGB triplet of the average blob colors.
**EXAMPLE**
>>> img = Image("lenna")
>>> blobs = img.findBlobs()
>>> print blobs[-1].meanColor()'

def meanColor(self):

    hack = (self.mBoundingBox[0], self.mBoundingBox[1], self.mBoundingBox[2], self.mBoundingBox[3])
    cv.SetImageROI(self.image.getBitmap(), hack)
    avg = cv.Avg(self.image.getBitmap(), self.mMask._getGrayscaleBitmap())
    cv.ResetImageROI(self.image.getBitmap())
    return tuple(reversed(avg[0:3]))
