Examine source code of Mint mbA

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Mint mbA",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-039-717a66ba4d455686088c80f391cb3264.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(134, 166, 104)",
      "toolbar_text": "rgb(3, 4, 3)",
      "frame": "rgb(6, 1, 8)",
      "tab_background_text": "rgb(220, 251, 220)",
      "toolbar_field": "rgb(239, 248, 239)",
      "toolbar_field_text": "rgb(6, 1, 8)",
      "tab_line": "rgb(220, 251, 220)",
      "popup": "rgb(51, 57, 51)",
      "popup_text": "rgb(255, 255, 255)",
      "button_background_hover": "rgb(120, 199, 120)",
      "tab_loading": "rgb(51, 51, 51)",
      "toolbar_field_border_focus": "rgb(120, 199, 120)",
      "toolbar_field_highlight": "rgb(120, 199, 120)",
      "toolbar_field_text_focus": "rgb(51, 51, 51)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{4e84cf33-a5a2-4848-a394-807dd72ebe54}"
    }
  }
}