Examine source code of The Focus Theme

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "FocusFox",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "left top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(169, 3, 90)",
      "toolbar_text": "rgb(254, 253, 230)",
      "frame": "rgb(22, 0, 27)",
      "tab_background_text": "rgb(251, 180, 210)",
      "toolbar_field": "rgb(201, 69, 121)",
      "toolbar_field_text": "rgb(255, 254, 230)",
      "tab_line": "rgb(228, 47, 196)",
      "popup": "rgb(47, 5, 90)",
      "popup_text": "rgb(255, 154, 226)",
      "tab_loading": "rgb(228, 47, 196)"
    }
  }
}