diff --git a/README.md b/README.md
index 154a242..58d6352 100644
--- a/README.md
+++ b/README.md
@@ -14,6 +14,7 @@ These themes have been tested and work:
 
 - Adwaita
 - Arc
+- Flat-Remix-GTK
 - HighContrast
 - Matcha (thank you @Chrysostomus)
 - Materia
diff --git a/src/extension.js b/src/extension.js
index bf896f9..4f26ebb 100644
--- a/src/extension.js
+++ b/src/extension.js
@@ -184,6 +184,13 @@ class Variants {
 			variants.day = name.replace(/-Dark(?!er)/g, '');
 			variants.night = variants.day.replace('-Darker', '') + '-Dark';
 		}
+		else if ( name.includes('Flat-Remix-GTK') ) {
+			const isSolid = name.includes('-Solid');
+			const withoutBorder = name.includes('-NoBorder');
+			const basename = name.split('-').slice(0, 4).join('-');
+			variants.day = basename + (name.includes('-Darker') ? '-Darker' : '') + (isSolid ? '-Solid' : '');
+			variants.night = basename + (name.includes('-Darkest') ? '-Darkest' : '-Dark') + (isSolid ? '-Solid' : '') + (withoutBorder ? '-NoBorder' : '');
+		}
 		else if ( name.includes('Matcha') ) {
 			variants.day = name.replace(/-dark-/g, '-');
 			variants.night = variants.day.replace('Matcha-', 'Matcha-dark-');
diff --git a/src/metadata.json b/src/metadata.json
index de10d49..5a8ed6a 100644
--- a/src/metadata.json
+++ b/src/metadata.json
@@ -1,6 +1,6 @@
 {
 	"name": "Night Theme Switcher",
-	"description": "Automatically change the GTK theme to dark variant when Night Light activates.\n\nTHEME COMPATIBILITY:\nYour theme must have a `-dark` variant, e.g. `Adwaita` and `Adwaita-dark`.\nThese themes have been tested and work:\n- Adwaita\n- Arc\n- HighContrast\n- Matcha\n- Materia\n- Mojave\n- Vimix\n- Yaru\n\nLet me know if the theme you use works as well, or if it doesn't, I can try to make it work.\n\nDo you need to change your GNOME shell theme as well? Try Night Shell Switcher! https://extensions.gnome.org/extension/2356/night-shell-switcher/",
+	"description": "Automatically change the GTK theme to dark variant when Night Light activates.\n\nTHEME COMPATIBILITY:\nYour theme must have a `-dark` variant, e.g. `Adwaita` and `Adwaita-dark`.\nThese themes have been tested and work:\n- Adwaita\n- Arc\nFlat-Remix-GTK\n- HighContrast\n- Matcha\n- Materia\n- Mojave\n- Vimix\n- Yaru\n\nLet me know if the theme you use works as well, or if it doesn't, I can try to make it work.\n\nDo you need to change your GNOME shell theme as well? Try Night Shell Switcher! https://extensions.gnome.org/extension/2356/night-shell-switcher/",
 	"uuid": "nightthemeswitcher@romainvigier.fr",
 	"url": "https://gitlab.com/rmnvgr/nightthemeswitcher-gnome-shell-extension/",
 	"version": 14,