Colorize edges of a graph layout to clarify crossing edges. Graphviz filters:
acyclic,bcomps,comps,edgepaint,gvcolor,gvpack,mingle,nop,sccmap,tred, &unflatten. More information: https://graphviz.org/pdf/edgepaint.1.pdf.
edgepaint path/to/layout1.gv path/to/layout2.gv ... > path/to/output.gv
edgepaint -color-scheme=accent7 path/to/layout.gv > path/to/output.gv
dot path/to/input.gv | edgepaint | dot -T png > path/to/output.png
edgepaint -?