Examine source code of Pastel Crystals

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Pastel Crystals",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg",
        "images/1.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right center",
        "right bottom"
      ],
      "additional_backgrounds_tiling": [
        "repeat",
        "repeat-x"
      ]
    },
    "colors": {
      "toolbar": "rgba(47, 14, 65, 0)",
      "toolbar_text": "rgb(86, 255, 215)",
      "frame": "rgb(47, 14, 65)",
      "tab_background_text": "rgb(26, 26, 195)",
      "toolbar_field": "rgba(244, 211, 195, 0.36)",
      "toolbar_field_text": "rgb(86, 255, 215)",
      "tab_line": "rgb(86, 255, 215)",
      "popup": "rgba(134, 173, 193, 0.57)",
      "popup_text": "rgb(37, 37, 127)",
      "tab_loading": "rgb(86, 255, 215)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{36213964-6ef8-48f0-88ee-bf049b3f9488}"
    }
  }
}