diff --git a/playground/app/app.vue b/playground/app/app.vue
index 8e2cc87..83f3438 100644
--- a/playground/app/app.vue
+++ b/playground/app/app.vue
@@ -1,37 +1,63 @@
 <script lang="ts" setup>
-    import { repository, version } from "../../package.json";
+    import { type BundledLanguage, bundledLanguages, type BundledTheme, bundledThemes } from "shiki";
+    import pkg from "../../package.json";
 
-    const repoUrl = "https://github.com/" + repository;
+    const repository = new URL(pkg.repository, "https://github.com").href;
+    const version = "v" + pkg.version;
+
+    const langNames = Object.keys(bundledLanguages).sort((a, b) => a.localeCompare(b));
+    const themeNames = Object.keys(bundledThemes).sort((a, b) => a.localeCompare(b));
+
+    const lang = ref<BundledLanguage>("typescript");
+    const lightTheme = ref<BundledTheme>("catppuccin-latte");
+    const darkTheme = ref<BundledTheme>("one-dark-pro");
+
+    const themes = computed(() => ({
+        light: lightTheme.value,
+        dark: darkTheme.value
+    }));
 </script>
 
 <template>
-    <header flex="~ items-center justify-between" m="x-auto y-3" p="x-3" max-w="screen-lg">
+    <header
+        flex="~ items-center justify-between"
+        m="x-auto y-4"
+        p="x-4"
+        max-w="screen-lg"
+    >
         <hgroup flex="~ gap-2 items-center">
-            <h1>Plain Shiki Playground</h1>
+            <h1 font="bold" text="5">Plain Shiki Playground</h1>
             <span
                 p="x-1 y-.5"
                 b="rounded-1"
                 bg="primary op-20"
+                font="mono"
                 text="3 primary"
-            >v{{ version }}</span>
+            >{{ version }}</span>
         </hgroup>
         <nav flex="~ gap-2">
-            <nav-button icon="ph:github-logo" as="a" :href="repoUrl"/>
+            <plain-button as="a" icon="ph:github-logo" title="GitHub" :href="repository"/>
             <theme-button mode="light" icon="solar:sun-2-outline"/>
             <theme-button mode="system" icon="solar:monitor-outline"/>
             <theme-button mode="dark" icon="solar:moon-outline"/>
         </nav>
     </header>
-    <main m="x-auto" max-w="screen-lg">
-        <div m="3" b="1 solid gray op-40 rounded-md">
+    <main
+        m="x-auto"
+        p="x-4"
+        max-w="screen-lg"
+    >
+        <div b="1 solid gray op-40 rounded-md">
             <div
                 flex="~ gap-2 items-center"
-                p="x-3 y-2"
+                p="x-4 y-1"
                 b-b="~ solid gray op-40"
             >
-                <plain-select :items="['javascript', 'typescript', 'html', 'css', 'json']"/>
+                <plain-select :items="langNames" v-model="lang"/>
+                <plain-select :items="themeNames" v-model="lightTheme"/>
+                <plain-select :items="themeNames" v-model="darkTheme"/>
             </div>
-            <plain-shiki />
+            <plain-shiki :lang :themes/>
         </div>
     </main>
 </template>
\ No newline at end of file
diff --git a/playground/app/components/nav-button.vue b/playground/app/components/plain-button.vue
similarity index 86%
rename from playground/app/components/nav-button.vue
rename to playground/app/components/plain-button.vue
index 3010de2..323ac5d 100644
--- a/playground/app/components/nav-button.vue
+++ b/playground/app/components/plain-button.vue
@@ -1,7 +1,5 @@
 <script lang="ts" setup>
-    const {
-        as = "a"
-    } = defineProps<{
+    const { as = "a" } = defineProps<{
         as?: string;
         icon: string;
     }>();
@@ -20,8 +18,8 @@
         size="9"
         b="1 solid gray op-40 rounded-md"
         bg="transparent"
-        un-text="5"
-        transition="250"
+        hover:bg="gray op-20"
+        un-text="4.5"
         cursor="pointer"
     >
         <iconify :name="icon"/>
diff --git a/playground/app/components/plain-select.vue b/playground/app/components/plain-select.vue
index 5a6634f..a4669be 100644
--- a/playground/app/components/plain-select.vue
+++ b/playground/app/components/plain-select.vue
@@ -1,5 +1,5 @@
 <script lang="ts" setup>
-    const props = defineProps<{
+    defineProps<{
         items: string[];
     }>();
     const modelValue = defineModel<string>();
@@ -8,26 +8,60 @@
 <template>
     <select-root v-model="modelValue">
         <select-trigger
-            flex="inline justify-between items-center gap-1"
+            flex="inline items-center gap-1.5"
             h="8"
-            min-w="40"
+            w="45"
+            outline="none"
             bg="inherit"
             font="mono"
-            text="sm"
+            text="sm nowrap truncate"
+            cursor="pointer"
         >
+            <select-icon flex="~" text="3 gray">
+                <iconify name="fa6-solid:chevron-down"/>
+            </select-icon>
             <select-value />
-            <select-icon />
         </select-trigger>
         <select-portal>
-            <select-content font="mono" bg="inherit">
-                <select-scroll-up-button />
+            <select-content
+                class="select-content"
+                p="y-2"
+                b="~ solid gray op-40 rounded-md"
+                backdrop="blur-6"
+                font="mono"
+                position="popper"
+            >
+                <select-scroll-up-button flex="~ justify-center" text="3 gray">
+                    <iconify name="fa6-solid:chevron-up"/>
+                </select-scroll-up-button>
                 <select-viewport>
-                    <select-item v-for="item, i in items" :key="i" :value="item">
+                    <select-item
+                        v-for="item, i in items"
+                        :key="i"
+                        class="select-item"
+                        p="x-3.5"
+                        leading="6"
+                        text="sm"
+                        :value="item"
+                    >
                         <select-item-text>{{ item }}</select-item-text>
                     </select-item>
                 </select-viewport>
-                <select-scroll-down-button />
+                <select-scroll-down-button flex="~ justify-center" text="3 gray">
+                    <iconify name="fa6-solid:chevron-down"/>
+                </select-scroll-down-button>
             </select-content>
         </select-portal>
     </select-root>
-</template>
\ No newline at end of file
+</template>
+
+<style>
+    .select-content {
+        min-width: var(--radix-select-trigger-width);
+        max-height: var(--radix-select-content-available-height);
+    }
+
+    .select-item[data-highlighted] {
+        --uno: outline-none text-primary bg-gray bg-op-30;
+    }
+</style>
\ No newline at end of file
diff --git a/playground/app/components/plain-shiki.vue b/playground/app/components/plain-shiki.vue
index f87d129..0597a90 100644
--- a/playground/app/components/plain-shiki.vue
+++ b/playground/app/components/plain-shiki.vue
@@ -1,13 +1,16 @@
 <script lang="ts" setup>
+    import type { BundledLanguage, BundledTheme } from "shiki";
     import example from "~/assets/example.ts?raw";
 
+    const { lang, themes } = defineProps<{
+        lang: BundledLanguage;
+        themes: Record<string, BundledTheme>;
+    }>();
+
     const editorEl = useTemplateRef("editor");
     usePlainShiki(editorEl, {
-        lang: "ts",
-        themes: {
-            light: "catppuccin-latte",
-            dark: "one-dark-pro"
-        }
+        lang: () => lang,
+        themes: () => themes
     });
 </script>
 
@@ -15,17 +18,14 @@
     <div
         ref="editor"
         class="plain-shiki"
-        p="x-3 y-2"
+        overflow="x-auto"
+        p="x-4 y-3"
         outline="none"
+        font="mono"
         whitespace="break-spaces"
-        lh="6"
+        leading="6"
+        text="nowrap"
         contenteditable
         v-html="example"
     ></div>
-</template>
-
-<style>
-    .plain-shiki {
-        font-family: consolas, var(--font);
-    }
-</style>
\ No newline at end of file
+</template>
\ No newline at end of file
diff --git a/playground/app/components/theme-button.vue b/playground/app/components/theme-button.vue
index 64e6157..466e8cd 100644
--- a/playground/app/components/theme-button.vue
+++ b/playground/app/components/theme-button.vue
@@ -1,5 +1,5 @@
 <script lang="ts" setup>
-    const props = defineProps<{
+    const { mode } = defineProps<{
         mode: string;
         icon: string;
     }>();
@@ -8,13 +8,13 @@
 
     function setColorMode() {
         tryStartViewTransition(() => {
-            colorMode.preference = props.mode;
+            colorMode.preference = mode;
         });
     }
 </script>
 
 <template>
-    <nav-button
+    <plain-button
         :icon
         :class="{
             [`is-checked`]: colorMode.preference === mode
diff --git a/playground/app/composables/usePlainShiki.ts b/playground/app/composables/usePlainShiki.ts
index 5c7ffcc..538e983 100644
--- a/playground/app/composables/usePlainShiki.ts
+++ b/playground/app/composables/usePlainShiki.ts
@@ -1,31 +1,48 @@
 import { createPlainShiki, type CreatePlainShikiReturns, type MountPlainShikiOptions } from "plain-shiki";
-import { type BundledLanguage, createHighlighter, createJavaScriptRegexEngine } from "shiki";
+import {
+    type BundledLanguage,
+    bundledLanguages,
+    type BundledTheme,
+    bundledThemes,
+    createHighlighterCore,
+    createJavaScriptRegexEngine,
+    type HighlighterCore
+} from "shiki";
 
-export type UsePlainShikiOptions = Omit<MountPlainShikiOptions, "lang"> & {
+export type UsePlainShikiOptions = Omit<MountPlainShikiOptions, "lang" | "themes"> & {
     lang: MaybeRefOrGetter<BundledLanguage>;
+    themes: MaybeRefOrGetter<Record<string, BundledTheme>>;
 };
 
+let shiki: HighlighterCore;
+
 export default function(el: MaybeRefOrGetter<HTMLElement | null>, options: UsePlainShikiOptions) {
     const target = toRef(el);
     const lang = toRef(options.lang);
+    const themes = toRef(options.themes);
 
     let plain: CreatePlainShikiReturns;
     let ctx: ReturnType<(typeof plain)["mount"]>;
 
-    const { trigger } = watchTriggerable([target, lang], () => {
+    const { trigger } = watchTriggerable([target, lang, themes], async () => {
         ctx?.dispose();
+
         if (target.value) {
+            await shiki?.loadLanguage(bundledLanguages[lang.value]);
+            for (const theme of Object.values(themes.value)) {
+                await shiki?.loadTheme(bundledThemes[theme]);
+            }
+
             ctx = plain?.mount(target.value, {
                 ...options,
-                lang: lang.value
+                lang: lang.value,
+                themes: themes.value
             });
         }
     });
 
     tryOnMounted(async () => {
-        const shiki = await createHighlighter({
-            langs: ["html", "css", "js", "ts"],
-            themes: Object.values(options.themes ?? {}).filter((theme) => theme !== void 0),
+        shiki ??= await createHighlighterCore({
             engine: createJavaScriptRegexEngine()
         });