Examine source code of Flower paint

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Flower paint",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(58, 58, 58, 0.5)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(255, 255, 255)",
      "tab_background_text": "rgb(202, 36, 138)",
      "toolbar_field": "rgb(255, 255, 255)",
      "toolbar_field_text": "rgb(91, 28, 137)",
      "tab_line": "rgb(255, 150, 129)",
      "popup": "rgb(227, 255, 247)",
      "popup_text": "rgb(130, 40, 197)",
      "tab_loading": "rgb(255, 150, 129)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{3c4bda8b-51d8-478d-bce9-a25a9951cdcd}"
    }
  }
}