Fix incorrect double-quotes.
@@ -80,7 +80,7 @@ def plot_automatic_colour_conversion_graph(filename, prog='fdp', args=''):
color='#2196F3FF',
fillcolor='#2196F370',
fontname='Helvetica',
- fontcolor="#263238")
+ fontcolor='#263238')
agraph.edge_attr.update(color='#26323870')
for node in ('CIE XYZ', 'RGB', 'Spectral Distribution'):
agraph.get_node(node.lower()).attr.update(
