diff --git a/modules/fcitx5/highlight.svg.mustache b/modules/fcitx5/highlight.svg.mustache
index d9fc2f75..7a6d23da 100644
--- a/modules/fcitx5/highlight.svg.mustache
+++ b/modules/fcitx5/highlight.svg.mustache
@@ -79,5 +79,5 @@
     sodipodi:type="rect"
     d="m 25.000001,10.000001 h 10 a 15,15 45 0 1 15,15 v 10 a 15,15 135 0 1 -15,15 h -10 a 15,15 45 0 1 -15,-15 v -10 a 15,15 135 0 1 15,-15 z"
     inkscape:path-effect="#path-effect998"
-    style="fill:#{{base04-hex}};fill-opacity:1" />
+    style="fill:#{{base02-hex}};fill-opacity:1" />
 </svg>
diff --git a/modules/fcitx5/template.nix b/modules/fcitx5/template.nix
index cd9103f6..fe108652 100644
--- a/modules/fcitx5/template.nix
+++ b/modules/fcitx5/template.nix
@@ -12,7 +12,7 @@ with colors;
     HighlightCandidateColor = base06;
     EnableBlur = false;
     FullWidthHighlight = true;
-    HighlightColor = base04;
+    HighlightColor = base02;
     HighlightBackgroundColor = base0E;
   };
   "InputPanel/BlurMargin" = {
diff --git a/modules/fcitx5/testbeds/fcitx5.nix b/modules/fcitx5/testbeds/fcitx5.nix
new file mode 100644
index 00000000..bb816119
--- /dev/null
+++ b/modules/fcitx5/testbeds/fcitx5.nix
@@ -0,0 +1,18 @@
+{
+  pkgs,
+  lib,
+  ...
+}:
+{
+  stylix.testbed.ui.command.text = "fcitx5-config-qt";
+  home-manager.sharedModules = lib.singleton {
+    i18n.inputMethod = {
+      enable = true;
+      type = "fcitx5";
+      fcitx5.addons = with pkgs; [
+        fcitx5-mozc
+        fcitx5-gtk
+      ];
+    };
+  };
+}