source: code/Website/data-files/y-labels-auto-labelstyle.txt

{
  "title":{
    "text":"Y Labels - Automatic with Label Style",
    "style":"{font-size: 16px; margin-top: 0; margin-bottom: 0; padding-top: 0; padding-bottom: 0; }"
  },

  "x_axis":{ "steps": 5 },

  "y_label__label_style":"12,#669999",
  "y_axis":{ "steps": 0.5, "min" : 0, "max":3 },
  
  "y_label_2__label_style":"12,#DD3030",
  "y_axis_right":{ "steps": 1, "min" : 3, "max":0 },
  
  "elements":[
    {
      "type":      "line",
      "colour":    "#736AFF",
      "text":      "Avg. wave height (cm)",
      "font-size": 10,
      "width":     2,
          "tip": "#x_label#<br>#val#",
      "values" :   [1.5,1.69,1.88,2.06,2.21,2.34,2.43,2.48,2.49,2.47,2.40,2.30,2.17,2.01,1.83,1.64,1.44,1.24,1.05,0.88,0.74,0.62,0.54,0.50,0.50,0.54,0.61,0.72,0.86,1.03,1.22,1.41,1.61,1.81,1.99,2.15,2.29,2.39,2.46,2.49,2.48,2.44,2.35,2.23,2.08]
    }
  ],

  "tooltip":{
    "shadow":true,
    "stroke":2,
    "colour":"#404040",
    "background":"#000000",
    "title":"{font-size: 14px; color: #905050;}",
    "body":"{font-size: 10px; font-weight: bold; color: #9090ff;}"
  }
}