Examine source code of Pink Strawberries

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Pink Strawberries",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center center"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(255, 255, 255, 0.31)",
      "toolbar_text": "rgb(100, 181, 90)",
      "frame": "rgb(255, 203, 219)",
      "tab_background_text": "rgb(43, 120, 33)",
      "toolbar_field": "rgba(255, 242, 246, 0.53)",
      "toolbar_field_text": "rgb(100, 181, 90)",
      "tab_line": "rgb(100, 181, 90)",
      "popup": "rgb(255, 203, 219)",
      "popup_text": "rgb(100, 181, 90)",
      "tab_loading": "rgb(100, 181, 90)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{45d19ce9-0b10-4b85-9ae7-ceee6d2c5e7e}"
    }
  }
}