Plug-in development involving visualization

[mpatiban]

Hi,

I am trying to improve an existing plug-in for Gephi visually.

I have just started, and I am very much lost about what packages to use for coloring the nodes or edges, and making the Graph appearance dynamic as the Plug-in is run.
From the existing code on Github, I was able to change the text based result of the plug-in which was already there.
But, I have not yet discovered how to change the look of the graph entirely when the plug-in is run.

Any help would be really appreciated, as I am doing this as a part of my final project.

Thank in advance,
Manasa