style.json

{
  "demo": {
    "background-color": "white",
    "box": {
      "color": "pink",
      "visible": true
    },
    "axes": {
      "z": {
        "color": "#00f",
        "ticklabel": {
          "color": "#0f0"
        },
        "label": {
          "color": "#f00"
        }
      },
      "ticklabel": {
        "color": "black"
      },
      "label": {
        "color": "black"
      },
      "x": {
        "color": "#f00",
        "ticklabel": {
          "color": "#00f"
        },
        "label": {
          "color": "#0f0"
        }
      },
      "y": {
        "color": "#0f0",
        "ticklabel": {
          "color": "#f00"
        },
        "label": {
          "color": "#00f"
        }
      },
      "color": "black",
      "visible": true
    }
  },
  "dark": {
    "background-color": "black",
    "box": {
      "visible": true
    },
    "axes": {
      "color": "white",
      "ticklabel": {
        "color": "white"
      },
      "visible": true,
      "label": {
        "color": "white"
      }
    }
  },
  "light": {
    "background-color": "white",
    "box": {
      "visible": true
    },
    "axes": {
      "color": "black",
      "ticklabel": {
        "color": "black"
      },
      "visible": true,
      "label": {
        "color": "black"
      }
    }
  }
}