Examine source code of drip drop

{
  "manifest_version": 2,
  "version": "3.0",
  "name": "drip drop (animated)",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "dripping.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(0, 0, 0, 0.52)",
      "toolbar_text": "rgb(255, 0, 4)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(143, 5, 8)",
      "toolbar_field": "rgb(255, 0, 4)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgb(143, 5, 8)",
      "popup": "rgba(0, 0, 0, 0.9)",
      "popup_text": "rgb(204, 12, 15)",
      "tab_loading": "rgb(143, 5, 8)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{476dcfee-4a37-4a58-bd17-7d8f992dd3c4}"
    }
  }
}