graph_style.json

{
    "unit_default": {
        "fixedsize": true,
        "style": "filled", 
        "width": 1.8, 
        "height": 1.8, 
        "fontname": "Helvetica",
        "fontcolor": "white",
        "shape": "doublecircle",
        "color": "#255E69FF"
    },
    "unit_1": {
        "inherit": "unit_default",
        "color": "#8AB2B9FF" 
    },
    "unit_2": {
        "inherit": "unit_default",
        "color": "#4D828CFF" 
    },
    "unit_3": {
        "inherit": "unit_default",
        "color": "#0F454FFF" 
    },
    "unit_4": {
        "inherit": "unit_default",
        "color": "#012C34FF" 
    },
    "topic" : {
        "style": "filled, rounded",
        "fontname": "Helvetica",
        "fontcolor": "white",
        "color": "#2F3F73FF",
        "shape" : "box"
    },
    "central_topic" : {
        "inherit" : "topic",
        "color" : "red"
    },
    "edge" : {
        "color": "#00000040",
        "headclip": true,
        "tailclip": false
    },
    "category_edge" : {
        "inherit" : "edge",
        "style" : "invis",
        "len" : 0.4
    },
    "category" : {
        "fontname": "Helvetica",
        "fontcolor": "white",
        "fillcolor": "#432F75", 
        "color": "#230439",
        "style": "filled",
        "fixedsize": true,
        "shape": "circle"
    }
}