Examine source code of [DARK] Blurry Lights

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Blurry Lights",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(21, 32, 45, 0.72)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(12, 12, 13)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(98, 110, 121)",
      "popup": "rgb(12, 17, 25)",
      "popup_text": "rgb(222, 230, 238)",
      "icons_attention": "rgb(109, 142, 236)",
      "toolbar_bottom_separator": "rgba(21, 32, 45, 0.72)",
      "toolbar_field_border_focus": "rgb(67, 94, 140)",
      "toolbar_top_separator": "rgba(67, 94, 140, 0.53)",
      "tab_loading": "rgb(98, 110, 121)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{71c65004-0c23-418a-9052-648674054c53}"
    }
  }
}