Examine source code of Splash! Water

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Splash! Water",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(0, 103, 209, 0.75)",
      "toolbar_text": "rgb(138, 195, 255)",
      "frame": "rgb(255, 255, 255)",
      "tab_background_text": "rgb(0, 32, 202)",
      "toolbar_field": "rgb(217, 255, 247)",
      "toolbar_field_text": "rgb(0, 132, 100)",
      "tab_line": "rgb(0, 255, 236)",
      "popup": "rgb(217, 255, 247)",
      "popup_text": "rgba(0, 37, 74, 0.75)",
      "tab_loading": "rgb(0, 255, 236)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{5e456001-e1c2-43ed-80ac-bca9085d70ab}"
    }
  }
}