Examine source code of pastel city (animated)

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "pastel city theme",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right bottom"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(114, 83, 162, 0.71)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(137, 99, 172)",
      "tab_background_text": "rgb(230, 249, 255)",
      "toolbar_field": "rgb(249, 208, 255)",
      "toolbar_field_text": "rgb(13, 112, 151)",
      "tab_line": "rgb(253, 149, 255)",
      "popup": "rgb(249, 208, 255)",
      "popup_text": "rgb(13, 112, 151)",
      "button_background_active": "rgb(13, 112, 151)",
      "button_background_hover": "rgb(102, 27, 140)",
      "icons_attention": "rgb(255, 190, 62)",
      "icons": "rgb(129, 219, 255)",
      "ntp_background": "rgb(94, 60, 161)",
      "popup_border": "rgb(176, 241, 255)",
      "popup_highlight_text": "rgb(232, 255, 253)",
      "popup_highlight": "rgb(73, 52, 121)",
      "sidebar_border": "rgb(176, 241, 255)",
      "sidebar_highlight_text": "rgb(230, 249, 255)",
      "sidebar_highlight": "rgb(102, 27, 140)",
      "sidebar": "rgb(73, 52, 121)",
      "tab_loading": "rgb(232, 255, 253)",
      "tab_text": "rgb(129, 219, 255)",
      "toolbar_field_border": "rgb(176, 241, 255)",
      "toolbar_field_highlight_text": "rgb(199, 251, 246)",
      "toolbar_field_highlight": "rgb(94, 60, 161)",
      "toolbar_top_separator": "rgba(94, 60, 161, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{04e6d02e-65b4-4a25-b038-19426c4aaaa7}"
    }
  }
}