Examine source code of Dark 80's Scanline

{
  "manifest_version": 2,
  "version": "1.3",
  "name": "Dark 80's Scanline",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(0, 0, 0, 0.6)",
      "toolbar_text": "rgb(28, 255, 255)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(255, 0, 200)",
      "toolbar_field": "rgba(0, 0, 0, 0.4)",
      "toolbar_field_text": "rgb(28, 255, 255)",
      "tab_line": "rgb(28, 255, 255)",
      "popup": "rgba(0, 0, 0, 0.7)",
      "popup_text": "rgb(28, 255, 255)",
      "button_background_active": "rgba(25, 25, 32, 0.9)",
      "frame_inactive": "rgb(25, 25, 32)",
      "icons": "rgb(255, 0, 200)",
      "popup_border": "rgba(255, 0, 200, 0.7)",
      "popup_highlight_text": "rgb(28, 255, 255)",
      "popup_highlight": "rgba(255, 0, 200, 0.3)",
      "sidebar_border": "rgb(255, 0, 200)",
      "sidebar_highlight_text": "rgb(255, 255, 255)",
      "sidebar_highlight": "rgba(255, 0, 200, 0.3)",
      "sidebar_text": "rgb(28, 255, 255)",
      "sidebar": "rgb(25, 25, 32)",
      "tab_text": "rgb(28, 255, 255)",
      "toolbar_bottom_separator": "rgba(255, 0, 200, 0.7)",
      "toolbar_field_border_focus": "rgba(255, 0, 200, 0.5)",
      "toolbar_field_border": "rgba(255, 0, 200, 0.3)",
      "toolbar_field_focus": "rgba(29, 30, 38, 0.95)",
      "toolbar_field_highlight_text": "rgb(255, 255, 255)",
      "toolbar_field_highlight": "rgba(255, 0, 200, 0.3)",
      "toolbar_field_separator": "rgba(255, 0, 200, 0.7)",
      "toolbar_field_text_focus": "rgb(255, 255, 255)",
      "toolbar_vertical_separator": "rgba(255, 0, 200, 0.7)",
      "tab_loading": "rgb(28, 255, 255)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f7cba635-201a-4092-9ca8-71141de099a2}"
    }
  }
}