wolffd@0: adj = rand(4) > 0.5;
wolffd@0: descriptions = {'First Random Node','Yet another node','The thrid one','The final node'};
wolffd@0: colors = [0 0.5 0.2];  % either use string names for colors or normalized rgb values
wolffd@0: graphViz4Matlab('-adjMat',adj,'-nodeDescriptions',descriptions,'-nodeColors',colors);
wolffd@0: 
wolffd@0: % double click on the nodes to see and edit descriptions.