Examine source code of Warm Summer Nights

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Summer Nights",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(44, 37, 37)",
      "toolbar_text": "rgb(234, 242, 241)",
      "frame": "rgb(64, 56, 56)",
      "tab_background_text": "rgb(234, 242, 241)",
      "toolbar_field": "rgb(33, 28, 28)",
      "toolbar_field_text": "rgb(234, 242, 241)",
      "tab_line": "rgb(255, 215, 109)",
      "popup": "rgb(44, 37, 37)",
      "popup_text": "rgb(234, 242, 241)",
      "icons": "rgb(255, 155, 94)",
      "popup_border": "rgb(255, 101, 122)",
      "tab_text": "rgb(234, 242, 241)",
      "toolbar_field_border": "rgb(255, 101, 122)",
      "toolbar_field_highlight_text": "rgb(44, 37, 37)",
      "toolbar_field_highlight": "rgb(255, 215, 109)",
      "tab_loading": "rgb(255, 215, 109)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{3a03deaf-1d1e-4f82-a31e-1ce4ed1c5c5f}"
    }
  }
}