Just completing the answers here, in case somebody needs it:
'view(g)' has a different behaviour in Sage and in SMC. In Sage it uses
LaTeX, while in SMC it is more or less equivalent to g.show(method='js')
(which relies on javascript/d3js, hence no latex whatsoever).
Currently, there is no way to specify a color for the vertices in
g.show(method='js'). It is not hard to add if somebody needs it. I wrote
this code and thus only added there what I needed. What I needed was a way
to 'differentiate' vertices, and I do not mind what the colors are as long
as they are different.
sage: g = graphs.PetersenGraph()
sage: g.show(method='js', vertex_partition=[g.independent_set()])
(I know, the vertex partition is not a vertex partition as not all vertices
appear. The partition is automatically completed if necessary)
Let me also add that perhaps the colors are not so different from each
other in this picture (I would guess dark blue/light blue) on your screens.
I fixed that in #19591 (needs_review) and the result is blue/orange, which
is much better.
Have fun,
Nathann
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