Creation of Custom Theme w a Font in powerBI

I am trying to create a new custom theme and I seem to be facing issues. what am I doing wrong here?

"name": "Test Theme",
"dataColors": [
"#1D2754",
"#FFFFFF",
"#CD2B2F",
"#00B0AF",
"#7A76B5",
"#E8897B",
"#26BCC8",
"#8431B4"
],

  "background": "#FFFFFF",
  "foreground": "#1D2754",
  "tableAccent": "#CE2A23"
  "good": "#1AAB40",     
  "neutral": "#d9b300",
  "bad": "#D64554",
  "maximum": "#118DFF",
  "center": "#D9B300",
  "minimum": "#DEEFFF",
  "null": "#FF7F48"

"visualStyles":{
    "*": {
        "*": {
            "*":  [{
                    "fontFamily": "Gotham"
                }]
        }
    }
}

}

}