Examine source code of Olivia

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Olivia",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "left center"
      ],
      "additional_backgrounds_tiling": [
        "repeat-x"
      ]
    },
    "colors": {
      "toolbar": "rgb(54, 52, 52)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgba(232, 196, 184, 0.75)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgb(232, 196, 184)",
      "popup": "rgb(54, 52, 52)",
      "popup_text": "rgb(230, 180, 164)",
      "button_background_hover": "rgba(232, 196, 184, 0.75)",
      "tab_background_separator": "rgb(0, 0, 0)",
      "tab_selected": "rgba(54, 52, 52, 0.78)",
      "tab_text": "rgb(232, 196, 184)",
      "tab_loading": "rgb(232, 196, 184)"
    }
  }
}