Examine source code of Seabreeze

{
  "manifest_version": 2,
  "version": "4.0",
  "name": "Seabreeze",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "left bottom"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(85, 158, 185, 0.53)",
      "toolbar_text": "rgb(0, 0, 0)",
      "frame": "rgb(84, 93, 99)",
      "tab_background_text": "rgb(0, 0, 0)",
      "toolbar_field": "rgba(115, 189, 196, 0.99)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgb(54, 143, 122)",
      "popup": "rgb(112, 181, 187)",
      "popup_text": "rgb(0, 0, 0)",
      "button_background_active": "rgba(60, 190, 219, 0.42)",
      "button_background_hover": "rgba(94, 185, 200, 0.8)",
      "icons_attention": "rgba(255, 255, 61, 0.96)",
      "icons": "rgba(0, 0, 0, 0.96)",
      "popup_border": "rgba(49, 140, 140, 0.89)",
      "tab_loading": "rgb(3, 57, 99)",
      "tab_selected": "rgba(29, 148, 148, 0.66)",
      "tab_text": "rgb(255, 255, 255)",
      "toolbar_bottom_separator": "rgb(48, 152, 169)",
      "toolbar_field_border_focus": "rgb(36, 116, 116)",
      "toolbar_field_border": "rgb(53, 156, 156)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{42f592f2-ef2e-45b3-9bdd-86229c76ee39}"
    }
  }
}