Examine source code of blueberry and mint

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "blueberry and mint",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(109, 25, 76, 0.77)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(134, 191, 175)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(210, 190, 201)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgba(109, 25, 76, 0.77)",
      "popup": "rgb(231, 237, 235)",
      "popup_text": "rgb(0, 0, 0)",
      "ntp_background": "rgb(206, 219, 215)",
      "sidebar_border": "rgba(109, 25, 76, 0.77)",
      "sidebar_highlight_text": "rgb(0, 0, 0)",
      "sidebar_highlight": "rgba(212, 176, 196, 0.77)",
      "sidebar_text": "rgb(255, 255, 255)",
      "sidebar": "rgb(121, 168, 152)",
      "tab_selected": "rgba(212, 176, 196, 0.77)",
      "toolbar_field_border_focus": "rgb(0, 0, 0)",
      "tab_loading": "rgba(109, 25, 76, 0.77)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c5d34024-5156-4fa7-9452-86595e669982}"
    }
  }
}