Examine source code of THFv8 - 2.2

{
  "manifest_version": 2,
  "version": "2.0",
  "name": "THFv8 - 2.2",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(4, 4, 4, 0.58)",
      "toolbar_text": "rgb(252, 179, 0)",
      "frame": "rgb(68, 71, 73)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(255, 255, 255)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgb(252, 179, 0)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(0, 0, 0)",
      "button_background_hover": "rgb(0, 114, 206)",
      "icons": "rgb(255, 255, 255)",
      "ntp_background": "rgb(68, 71, 73)",
      "sidebar_border": "rgb(252, 179, 0)",
      "sidebar_highlight": "rgb(252, 179, 0)",
      "tab_text": "rgb(252, 179, 0)",
      "tab_loading": "rgb(252, 179, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{0cbaa904-a139-438f-b922-3dd47f832fd4}"
    }
  }
}