diff --git a/src/Controller/KanjiController.php b/src/Controller/KanjiController.php
index 9d02417..8836b46 100644
--- a/src/Controller/KanjiController.php
+++ b/src/Controller/KanjiController.php
@@ -23,21 +23,39 @@ class KanjiController extends AbstractController
         return "kanji/$path.html.twig";
     }
 
+    /** @return array<string, array<string, 0>> */
+    private function getCharInfo(): array
+    {
+        $ret = [];
+
+        $lists = [
+            'sn'      => $this->anki->getKnownSnKanjiCounts(),
+            'sln'     => $this->anki->getKnownSlnKanjiCounts(),
+            'unicode' => $this->anki->getUnicodeKanji(),
+            'taiwan'  => $this->charList->getList('taiwan')['chars'],
+        ];
+
+        foreach ($lists as $listName => $list) {
+            foreach (array_keys($list) as $char) {
+                $ret[$char] ??= [];
+                $ret[$char][$listName] = 0;
+            }
+        }
+
+        return $ret;
+    }
+
     #[Route('/{start}-{end}', name: 'index')]
     public function index(
         string $start,
         string $end,
     ): Response {
-        $snKanji      = array_keys($this->anki->getKnownSnKanjiCounts());
-        $slnKanji     = array_keys($this->anki->getKnownSlnKanjiCounts());
-        $unicodeKanji = $this->anki->getUnicodeKanji();
-
-        $taiwan = $this->charList->getList('taiwan');
-
         $jiten = json_decode(file_get_contents(
             "{$this->getParameter('kernel.project_dir')}/data/kanken-links.json",
         ), true);
 
+        $charInfo = $this->getCharInfo();
+
         $chars = [];
         foreach (range(intval("{$start}0", 16), intval("{$end}f", 16)) as $codepoint) {
             $charStr = mb_chr($codepoint, 'UTF-8');
@@ -45,12 +63,7 @@ class KanjiController extends AbstractController
             $chars[] = [
                 'str'       => $charStr,
                 'codepoint' => dechex($codepoint),
-                'lists'     => [
-                    'sn'      => in_array($charStr, $snKanji,      true),
-                    'sln'     => in_array($charStr, $slnKanji,     true),
-                    'unicode' => in_array($charStr, $unicodeKanji, true),
-                    'taiwan'  => key_exists($charStr, $taiwan['chars']),
-                ],
+                'lists'     => $charInfo[$charStr] ?? [],
                 'jiten_href' => key_exists($charStr, $jiten)
                     ? "https://kanji.jitenon.jp/kanji{$jiten[$charStr]}"
                     : null
diff --git a/src/Service/AnkiService.php b/src/Service/AnkiService.php
index 9e6a1ae..365d621 100644
--- a/src/Service/AnkiService.php
+++ b/src/Service/AnkiService.php
@@ -141,14 +141,14 @@ class AnkiService
         $this->request('guiBrowse', ['query' => 'nid:' . $note->getId()]);
     }
 
-    /** @return list<string> */
+    /** @return array<string, 0> */
     public function getUnicodeKanji(): array
     {
         $ret = [];
 
         foreach ($this->getNotes($this->getAllUnicodeNoteIds()) as $note) {
             assert($note instanceof UnicodeNote);
-            $ret[] = $note->getCharacter();
+            $ret[$note->getCharacter()] = 0;
         }
 
         return $ret;
diff --git a/src/Service/CharListService.php b/src/Service/CharListService.php
index 3414aec..11f61c4 100644
--- a/src/Service/CharListService.php
+++ b/src/Service/CharListService.php
@@ -13,7 +13,7 @@ class CharListService
     /**
      * TODO: Document the structure being returned... maybe
      *
-     * @return array<mixed>
+     * @return array<string, string|array<string, 0>|array<string|array<string, 0>>>
      */
     function getList(string $name): array
     {
diff --git a/templates/kanji/grid.html.twig b/templates/kanji/grid.html.twig
index 4a32c2e..f2155d2 100644
--- a/templates/kanji/grid.html.twig
+++ b/templates/kanji/grid.html.twig
@@ -3,15 +3,21 @@
 {% block title %}Kanji Index{% endblock %}
 
 {% block body %}
+<style>
+    .taiwan > .kanji-card { background-color: var(--bs-success); }
+    .sn     > .kanji-card { background-color: var(--bs-danger);  }
+    .sln    > .kanji-card { background-color: var(--bs-warning); }
+</style>
+
 <div class="example-wrapper">
     <h1 class="text-center p-2 mb-2">{{ block('title') }}</h1>
     <div class="d-flex flex-wrap m-2">
     {% for char in characters %}
         <div style="width: calc(100% / 16);">
         <div
-            class="border text-center rounded"
+            class="border text-center rounded {{ char.lists|keys|join(' ') }}"
             style="
-                {% if char.lists.unicode %}
+                {% if char.lists.unicode is defined %}
                 border-color: green !important;
                 border-width: 3px !important;
                 {% endif %}
@@ -19,12 +25,7 @@
                 overflow: hidden;
             "
         >
-            <div class="
-                border-bottom fs-4 pb-1
-                {{ char.lists.taiwan  ? 'bg-primary text-white' : '' }}
-                {{ char.lists.sln     ? 'bg-danger  text-white' : '' }}
-                {{ char.lists.sn      ? 'bg-warning text-black' : '' }}
-            ">
+            <div class="kanji-card border-bottom fs-4 pb-1">
                 {% if char.jiten_href != null %}
                 <a
                     target="_blank"
@@ -41,7 +42,7 @@
                 font-size: 0.5em;
                 padding-bottom: 2px;
             ">
-                {% if not char.lists.unicode %}
+                {% if char.lists.unicode is not defined %}
                 <a
                     target="_blank"
                     href="{{ path('app_kanji_register', {