Examine source code of texturized_rocks

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "texturized rocks",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center center"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(34, 24, 22, 0.42)",
      "toolbar_text": "rgba(202, 185, 173, 0.8)",
      "frame": "rgb(4, 57, 63)",
      "tab_background_text": "rgb(245, 245, 245)",
      "toolbar_field": "rgba(71, 49, 35, 0.24)",
      "toolbar_field_text": "rgba(251, 243, 247, 0.8)",
      "tab_line": "rgba(255, 159, 0, 0.99)",
      "popup": "rgba(32, 21, 37, 0.91)",
      "popup_text": "rgb(255, 255, 255)",
      "tab_loading": "rgba(255, 159, 0, 0.99)"
    }
  }
}