Borders #2

import Image

def borders(filename):
	im = Image.open(filename)
	im = im.convert("RGB")
	pix = im.load()

	x = im.size[0]-1
	y = im.size[1]-1
	
	matches = True
	
	for i in xrange(x):
		if pix[i, 0] != pix[i+1, 0] or pix[i, y] != pix[i+1, y]:
			matches = False
			break
		
	if matches:
		for i in xrange(y):
			if pix[0, i] != pix[0, i+1] or pix[x, i] != pix[x, i+1]:
				matches = False
				break
	
	if matches:
		return '#%02x%02x%02x' % pix[0, 0]
	else:
		return False