Examine source code of Solarized Light/Dark auto

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Solarized Light/Dark",
  "description": "A Firefox theme using the Solarized color palette, adapting to light and dark modes.",
  "author": "wwnbb",
  "icons": {
    "32": "icon.svg"
  },
  "theme": {
    "colors": {
      "toolbar": "#eee8d5",
      "toolbar_text": "#657b83",
      "frame": "#fdf6e3",
      "tab_background_text": "#586e75",
      "toolbar_field": "#eee8d5",
      "toolbar_field_text": "#657b83",
      "tab_line": "#268bd2",
      "popup": "#eee8d5",
      "popup_text": "#657b83",
      "tab_loading": "#268bd2"
    }
  },
  "dark_theme": {
    "colors": {
      "toolbar": "#073642",
      "toolbar_text": "#839496",
      "frame": "#002b36",
      "tab_background_text": "#93a1a1",
      "toolbar_field": "#073642",
      "toolbar_field_text": "#839496",
      "tab_line": "#2aa198",
      "popup": "#073642",
      "popup_text": "#839496",
      "tab_loading": "#2aa198"
    },
    "properties": {
      "panel_hover": "color-mix(in srgb, currentColor 9%, transparent)",
      "panel_active": "color-mix(in srgb, currentColor 14%, transparent)",
      "panel_active_darker": "color-mix(in srgb, currentColor 25%, transparent)",
      "toolbar_field_icon_opacity": "1",
      "zap_gradient": "linear-gradient(90deg, #6c71c4 0%, #268bd2 52.08%, #2aa198 100%)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{7d8efe46-ef05-4261-97c9-6377c03bee6a}"
    }
  }
}