Everything from upstream, plus the parts it never got round to.
A visual preset gallery
Every scheme is a card tinted with its own background colour, showing its character hues. Click one to load it.
Searchable colour editing
All 46 named Adwaita colours, in collapsible categories with a search box — picker or hex, whichever you prefer.
A live preview, with contrast warnings
A schematic window at the top of the Colors tab redraws as you edit, before you apply anything — and marks any text that falls below the WCAG AA contrast minimum, so an unreadable pairing is visible immediately.
Contrast-checked schemes
Every bundled scheme is scored against WCAG AA. All but one clear it — Solarized Light is left as its authors intended, since its low contrast is the scheme rather than a mistake.
A palette from your wallpaper
The Monet engine turns any image into a full Material You scheme — choose from nine variants (Vibrant, Tonal Spot, Expressive…) and a contrast level.
GNOME Shell theming, applied live
Generate a matching Shell theme from the current preset — the panel, overview, Super+Tab switcher and quick settings repaint on a running session. No logging out. It recolours the stylesheet your installed Shell already ships, so it follows whatever GNOME you run rather than a list of known versions.
Firefox, themed to match
The Firefox engine writes the preset into the profiles you choose, through firefox-gnome-theme — toolbar, tabs, menus and the Library, for Firefox, LibreWolf and Waterfox alike. Each profile gets its own switch, and one you have already themed yourself is switched off on sight rather than painted over. No profile has the theme? The app offers to install a tested release for you, and removes it as cleanly. The theme's own nineteen optional features — OLED black, tabs as headerbar, system icons and the rest — are switches here too, instead of lines you hand-edit into a file the app also writes.
Icons that follow the scheme
The icon engine recolours Adwaita's blue icons — folders, drives, mimetypes — through the preset's own palette, chosen by measured contrast so the folder never vanishes against its background. One click applies it, one removes it.
Desktop settings without Tweaks
GTK 3 theme, cursor, dark style and window buttons, right in the Theming tab — with a warning Tweaks never had, when a chosen GTK 3 theme is one your Flatpak apps cannot resolve.
Your old theme survives
Apply recognises a stylesheet it didn't write and offers to move it into your theme library instead of overwriting it — and every Apply is snapshotted, so Restore means restore.
Pick colours from the preset itself
Every colour button opens the preset's own palette first — nine ramps, named on hover — with the system dialog one click behind it.
Custom CSS
An escape hatch for anything the colour variables can't express, per toolkit.
Adaptive down to mobile
The window reflows to narrow widths, moving the view switcher to a bottom bar.
Early, but working
