Feature request: Colored nodes in the visualization

[mt0rm0]

Feature request: Coloured nodes in the graph visualization

It would be awesome having different colours for the nodes in the visualization for better keeping track of some characteristics, specially when the graph has grown too big.

I can think of two options:

• flagging manually the colours while updating the composer
• automatic colouring based on information from the functions, like tracking predefined prefixes in the name

[akrishnamo]

I second this. Is there a way we can color a node if the code in that step fails?

[akrishnamo]

One simple thing that seems to work is to color the digraph post results.
x=composer.graphviz()
x.node('<node_name>', fillcolor='green')