Examine source code of Dark Blue Theme

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Dark Blue Theme",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "left top"
      ],
      "additional_backgrounds_tiling": [
        "repeat-x"
      ]
    },
    "colors": {
      "toolbar": "rgb(3, 23, 86)",
      "toolbar_text": "rgb(219, 228, 251)",
      "frame": "rgb(2, 18, 68)",
      "tab_background_text": "rgb(233, 238, 252)",
      "toolbar_field": "rgb(1, 46, 168)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(35, 205, 179)",
      "popup": "rgb(2, 18, 68)",
      "popup_text": "rgb(235, 239, 248)",
      "button_background_active": "rgb(2, 18, 68)",
      "button_background_hover": "rgb(2, 18, 68)",
      "icons": "rgb(255, 255, 255)",
      "ntp_background": "rgb(3, 23, 86)",
      "ntp_text": "rgb(255, 255, 255)",
      "popup_border": "rgb(2, 18, 68)",
      "popup_highlight_text": "rgb(255, 255, 255)",
      "popup_highlight": "rgb(2, 18, 68)",
      "sidebar_border": "rgb(2, 18, 68)",
      "sidebar_highlight_text": "rgb(255, 255, 255)",
      "sidebar_highlight": "rgb(2, 18, 68)",
      "sidebar_text": "rgb(255, 255, 255)",
      "sidebar": "rgb(2, 18, 68)",
      "tab_background_separator": "rgb(2, 18, 68)",
      "tab_loading": "rgb(2, 18, 68)",
      "tab_selected": "rgb(2, 18, 68)",
      "tab_text": "rgb(255, 255, 255)",
      "toolbar_bottom_separator": "rgb(2, 18, 68)",
      "toolbar_field_border_focus": "rgb(2, 18, 68)",
      "toolbar_field_border": "rgb(2, 18, 68)",
      "toolbar_field_focus": "rgb(2, 18, 68)",
      "toolbar_field_highlight_text": "rgb(2, 18, 68)",
      "toolbar_field_highlight": "rgb(255, 255, 255)",
      "toolbar_field_separator": "rgb(2, 18, 68)",
      "toolbar_field_text_focus": "rgb(255, 255, 255)",
      "toolbar_vertical_separator": "rgb(2, 18, 68)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{d43ff393-7d35-4234-a77e-4183dd4b4ffa}"
    }
  }
}