diff --git a/lyrathorpe/swaywm.nix b/lyrathorpe/swaywm.nix
index 84e9bf4..3d9fcf2 100644
--- a/lyrathorpe/swaywm.nix
+++ b/lyrathorpe/swaywm.nix
@@ -62,6 +62,21 @@ in
       size = 16;
     };
     programs.regreet.extraCss = ''
+      /* GTK4 Adwaita legacy names (what plain GTK4 actually references). */
+      @define-color theme_bg_color #${ctp.base};
+      @define-color theme_fg_color #${ctp.text};
+      @define-color theme_base_color #${ctp.mantle};
+      @define-color theme_text_color #${ctp.text};
+      @define-color theme_selected_bg_color #${ctp.blue};
+      @define-color theme_selected_fg_color #${ctp.base};
+      @define-color insensitive_bg_color #${ctp.mantle};
+      @define-color insensitive_fg_color #${ctp.overlay0};
+      @define-color borders #${ctp.surface1};
+      @define-color warning_color #${ctp.peach};
+      @define-color error_color #${ctp.red};
+      @define-color success_color #${ctp.green};
+
+      /* libadwaita names (inert on plain GTK4, kept for forward-compat). */
       @define-color window_bg_color #${ctp.base};
       @define-color window_fg_color #${ctp.text};
       @define-color view_bg_color #${ctp.mantle};
@@ -73,9 +88,6 @@ in
       @define-color accent_color #${ctp.blue};
       @define-color destructive_bg_color #${ctp.red};
       @define-color destructive_fg_color #${ctp.base};
-      @define-color error_color #${ctp.red};
-      @define-color warning_color #${ctp.peach};
-      @define-color success_color #${ctp.green};
 
       window {
         background-color: #${ctp.base};
@@ -125,6 +137,9 @@ in
         greeter = pkgs.writeShellScript "regreet-cage" ''
           export XKB_DEFAULT_LAYOUT=us
           export XKB_DEFAULT_VARIANT=dvorak
+          # ReGreet is plain GTK4 (no libadwaita); force the dark Adwaita variant
+          # so the extraCss accents sit on a dark base instead of light Adwaita.
+          export GTK_THEME=Adwaita:dark
           exec ${pkgs.dbus}/bin/dbus-run-session ${lib.getExe pkgs.cage} -s -- ${lib.getExe config.programs.regreet.package}
         '';
       in