Examine source code of facebook like

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "facebook like",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right center"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(66, 66, 43, 0.47)",
      "toolbar_text": "rgb(64, 48, 250)",
      "frame": "rgb(5, 4, 4)",
      "tab_background_text": "rgb(244, 66, 9)",
      "toolbar_field": "rgba(224, 21, 21, 0)",
      "toolbar_field_text": "rgb(244, 244, 12)",
      "tab_line": "rgb(37, 252, 3)",
      "popup": "rgb(18, 16, 14)",
      "popup_text": "rgb(243, 217, 4)",
      "tab_loading": "rgb(37, 252, 3)"
    }
  }
}