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次の例で個々のノードの色を変更するにはどうすればよいですか?

%pylab inline

import pandas as pd
import networkx as nx
import holoviews as hv

hv.extension('bokeh')
G = nx.Graph()
ndxs = [1,2,3,4]
G.add_nodes_from(ndxs)
G.add_weighted_edges_from([(1,2,0), (1,3,1), (1,4,-1),
                           (2,4,1), (2,3,-1), (3,4,10)]) 

hv.extension('bokeh')
%opts Graph [width=400 height=400]
padding = dict(x=(-1.1, 1.1), y=(-1.1, 1.1))
hv.Graph.from_networkx(G, nx.layout.spring_layout).redim.range(**padding)

ここに画像の説明を入力

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