Examine source code of Mountain Dark Blue Theme

{
  "manifest_version": 2,
  "version": "1.1",
  "name": "Mountain Dark Blue Theme ",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(12, 55, 87)",
      "toolbar_text": "rgb(0, 214, 255)",
      "frame": "rgb(255, 255, 255)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(38, 72, 102)",
      "toolbar_field_text": "rgb(1, 215, 255)",
      "tab_line": "rgb(0, 217, 255)",
      "popup": "rgb(7, 50, 84)",
      "popup_text": "rgb(0, 216, 255)",
      "button_background_active": "rgb(34, 25, 77)",
      "button_background_hover": "rgb(38, 72, 102)",
      "popup_highlight": "rgb(0, 146, 255)",
      "tab_loading": "rgb(0, 217, 255)",
      "toolbar_field_border_focus": "rgb(1, 215, 255)",
      "toolbar_field_border": "rgb(38, 72, 102)",
      "toolbar_field_focus": "rgba(0, 74, 109, 0.5)",
      "toolbar_field_highlight": "rgb(0, 146, 255)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{bec9c397-4980-4836-8a71-0be437618e25}"
    }
  }
}