'**SUMMARY**
Return the euclidean color distance of the color tuple at x,y from a given color (default black).
**PARAMETERS**
* *color* - An RGB triplet to calculate from which to calculate the color distance.
**RETURNS**
A floating point color distance value.
**EXAMPLE**
>>> img = Image("OWS.jpg")
>>> blobs = img.findBlobs(128)
>>> for b in blobs:
>>>    print b.colorDistance(color.WHITE):'

def colorDistance(self, color=(0, 0, 0)):

    return spsd.euclidean(np.array(color), np.array(self.meanColor()))
