Examine source code of falling stars (animated)

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "falling stars theme",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(0, 0, 0, 0)",
      "toolbar_text": "rgb(130, 131, 184)",
      "frame": "rgb(142, 179, 201)",
      "tab_background_text": "rgb(113, 114, 162)",
      "toolbar_field": "rgb(0, 0, 0)",
      "toolbar_field_text": "rgb(122, 125, 187)",
      "tab_line": "rgb(70, 66, 132)",
      "popup": "rgb(0, 0, 0)",
      "popup_text": "rgb(144, 148, 221)",
      "button_background_active": "rgb(80, 67, 146)",
      "button_background_hover": "rgb(34, 28, 71)",
      "icons_attention": "rgb(255, 255, 255)",
      "icons": "rgb(194, 197, 255)",
      "popup_border": "rgb(70, 66, 132)",
      "popup_highlight_text": "rgb(218, 212, 255)",
      "popup_highlight": "rgb(59, 62, 143)",
      "sidebar_border": "rgb(59, 62, 143)",
      "sidebar_highlight_text": "rgb(194, 197, 255)",
      "sidebar_highlight": "rgb(59, 62, 143)",
      "sidebar_text": "rgb(156, 151, 187)",
      "sidebar": "rgb(0, 0, 0)",
      "tab_background_separator": "rgb(0, 0, 0)",
      "tab_loading": "rgb(218, 212, 255)",
      "tab_text": "rgb(156, 151, 187)",
      "toolbar_bottom_separator": "rgba(70, 66, 132, 0)",
      "toolbar_field_highlight_text": "rgb(218, 212, 255)",
      "toolbar_field_highlight": "rgb(70, 66, 132)",
      "toolbar_top_separator": "rgba(70, 66, 132, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{d3361da4-c625-4137-ac82-087c3acbd359}"
    }
  }
}