gvcolor

Colorize a ranked digraph with a range of colors. Graphviz filters: acyclic, bcomps, comps, edgepaint, gvcolor, gvpack, mingle, nop, sccmap, tred, & unflatten. More information: https://graphviz.org/pdf/gvcolor.1.pdf.

gvcolor path/to/layout1.gv path/to/layout2.gv ... > path/to/output.gv

dot path/to/input.gv | gvcolor | dot -T png > path/to/output.png

gvcolor -?