Examine source code of libramos

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "libramos",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgba(240, 245, 245, 0)",
      "toolbar_text": "rgb(15, 14, 15)",
      "frame": "rgb(210, 210, 210)",
      "tab_background_text": "rgb(0, 0, 0)",
      "toolbar_field": "rgb(255, 255, 255)",
      "toolbar_field_text": "rgb(4, 4, 4)",
      "tab_line": "rgb(255, 249, 0)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(18, 18, 19)",
      "button_background_active": "rgb(253, 253, 253)",
      "button_background_hover": "rgb(245, 248, 249)",
      "icons_attention": "rgb(208, 230, 71)",
      "tab_loading": "rgb(101, 101, 95)",
      "tab_selected": "rgb(248, 255, 0)",
      "tab_text": "rgb(11, 11, 0)",
      "toolbar_field_separator": "rgb(15, 15, 15)",
      "toolbar_top_separator": "rgb(8, 8, 8)",
      "toolbar_vertical_separator": "rgb(7, 7, 7)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{71609589-379d-443c-87f0-cf4abad75408}"
    }
  }
}