Examine source code of Midnight Olive

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Midnight Olive",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "left top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(72, 97, 92)",
      "toolbar_text": "rgb(232, 224, 212)",
      "frame": "rgb(225, 234, 239)",
      "tab_background_text": "rgb(255, 247, 233)",
      "toolbar_field": "rgb(225, 234, 239)",
      "toolbar_field_text": "rgb(181, 39, 39)",
      "tab_line": "rgb(135, 215, 167)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(73, 76, 125)",
      "tab_loading": "rgb(135, 215, 167)"
    }
  }
}