TT5 Light/Dark Toggle

WordPress plugin that adds a light/dark mode toggle for the Twenty Twenty-Five theme.

Features

Floating toggle button (bottom-right)
Remembers choice in localStorage and a cookie
Logged-in users: preference saved to user meta
Respects system prefers-color-scheme on first visit (until the user chooses)
No flash of wrong theme (inline script in <head>)
Dark palette tuned for TT5 default color presets

Requirements

WordPress 6.4+
Active theme: Twenty Twenty-Five (or a child theme of it)

Installation

Copy the tt5-light-dark-toggle folder to wp-content/plugins/.
Activate TT5 Light/Dark Toggle under Plugins.
Visit your site — a Dark / Light button appears at the bottom-right.

How it works

Twenty Twenty-Five does not ship with a built-in light/dark switch. This plugin overrides the theme’s CSS preset variables (--wp--preset--color--*) when html has the class tt5-ldt-dark, giving a readable dark version of the default style without changing your theme files.

Notes

Works with the default TT5 palette. If you use a style variation (Evening, Midnight, etc.), colors may look different; the toggle still swaps to a dark-friendly palette.
Custom blocks with hard-coded hex colors in the editor are not auto-adjusted.

License

GPL-2.0-or-later

README.md Unescape Escape