Color a particular node in Networkx and Graphviz
Since you are using Graphviz to do the drawing you need to use the attributes that Graphviz understands. See https://graphviz.gitlab.io/_pages/doc/info/attrs.html
import networkx as nxfrom networkx.drawing.nx_agraph import to_agraphG = nx.Graph()G.add_node(1,color='red',style='filled',fillcolor='blue',shape='square')G.add_node(2,color='blue',style='filled')G.add_edge(1,2,color='green')G.nodes[2]['shape']='circle'G.nodes[2]['fillcolor']='red'A = to_agraph(G)A.layout()A.draw('color.png')print(A.to_string())Gives
strict graph { graph [bb="0,0,107.21,46.639"]; node [label="\N"]; 1 [color=red, fillcolor=blue, height=0.5, pos="18,28.639", shape=square, style=filled, width=0.5]; 2 [color=blue, fillcolor=red, height=0.5, pos="89.21,18", shape=circle, style=filled, width=0.5]; 1 -- 2 [color=green, pos="36.338,25.899 47.053,24.298 60.519,22.286 71.18,20.694"];}