Error importing Theme

Good morning,

I'm getting a message of "There was a problem importing your theme file. Please try again or choose another file". Can anyone tell me what i'm doing wrong?

{
  "name": "Company Theme",
  "propertyValues": {
    "background": "#f2f2f2",
    "fontFamily": "Arial",
    "fontSize": "12",
    "foreground": "#333",
    "tableAccent": "#3b7dfe",
    "tableAccentForeground": "#ffffff",
    "tableAccentNeutralDark": "#333",
    "tableAccentNeutralLight": "#f2f2f2",
    "tableAccentNeutralLighter": "#f2f2f2",
    "tableHeaderBackground": "#3b7dfe",
    "tableHeaderForeground": "#ffffff",
    "tableHeaderSelectedBackground": "#333",
    "tableHeaderSelectedForeground": "#ffffff"
  }
}