diff --git a/materialious/src/lib/components/settings/Theme.svelte b/materialious/src/lib/components/settings/Theme.svelte
index b2dd2c10..0575255c 100644
--- a/materialious/src/lib/components/settings/Theme.svelte
+++ b/materialious/src/lib/components/settings/Theme.svelte
@@ -29,6 +29,13 @@
 		currentThemeColors = await getDynamicTheme();
 	});
 
+	async function setThemeColors() {
+		await tick();
+
+		currentThemeColors = await getDynamicTheme();
+		interfaceAdvancedThemingStore.set(currentThemeColors);
+	}
+
 	async function colorOnInput(
 		color: {
 			hsv: HsvaColor | null;
@@ -43,10 +50,7 @@
 		colorPickerDebounce = setTimeout(async () => {
 			if (!color.hex) return;
 			setThemeColor(propetyKey, color.hex);
-			await tick();
-			currentThemeColors = await getDynamicTheme();
-
-			interfaceAdvancedThemingStore.set(currentThemeColors);
+			await setThemeColors();
 		}, 100);
 	}
 
@@ -62,8 +66,10 @@
 		colorPickerDebounce = setTimeout(async () => {
 			themeColorStore.set(color.hex);
 			await tick();
+
 			setAmoledTheme();
 			currentThemeColors = await getDynamicTheme();
+			interfaceAdvancedThemingStore.set({});
 		}, 100);
 	}
 
@@ -79,6 +85,7 @@
 		}
 
 		currentThemeColors = await getDynamicTheme();
+		interfaceAdvancedThemingStore.set({});
 	}
 </script>
 
@@ -126,7 +133,7 @@
 					bind:checked={$interfaceAmoledTheme}
 					onclick={async () => {
 						interfaceAmoledTheme.set(!$interfaceAmoledTheme);
-						currentThemeColors = await getDynamicTheme();
+						await setThemeColors();
 					}}
 					role="switch"
 				/>
diff --git a/materialious/src/lib/css/global.css b/materialious/src/lib/css/global.css
index aa68c71a..10757630 100644
--- a/materialious/src/lib/css/global.css
+++ b/materialious/src/lib/css/global.css
@@ -183,7 +183,7 @@ menu.player-settings {
 
 .player-slider [data-melt-slider-thumb] {
 	position: absolute;
-	border-radius: 1rem;
+	border-radius: var(--player-border-radius);
 	background: var(--primary);
 	left: var(--percentage);
 	top: 50%;
diff --git a/materialious/src/lib/externalSettings/settings.ts b/materialious/src/lib/externalSettings/settings.ts
index 61c7fd6f..6014e74d 100644
--- a/materialious/src/lib/externalSettings/settings.ts
+++ b/materialious/src/lib/externalSettings/settings.ts
@@ -53,9 +53,11 @@ import {
 	playerPreferredVolumeStore,
 	watchHistoryEnabledStore,
 	filterContentUrlStore,
-	filterContentUrlAutoUpdateStore
+	filterContentUrlAutoUpdateStore,
+	interfaceAdvancedThemingStore
 } from '$lib/store';
 import { isOwnBackend } from '$lib/shared';
+import { SUPPORTED_THEME_KEYS } from '$lib/shared/theme';
 
 type PersistedStore<T> = {
 	name: string;
@@ -77,6 +79,12 @@ const zAuth = z.object({
 	username: z.string(),
 	token: z.string()
 });
+const zThemeColors = z.record(
+	z.string().refine((val) => SUPPORTED_THEME_KEYS.includes(val), {
+		message: 'CSS property not allowed'
+	}),
+	z.string().regex(/^#?([A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})$/)
+);
 
 export const persistedStores: PersistedStore<any>[] = [
 	{
@@ -270,6 +278,12 @@ export const persistedStores: PersistedStore<any>[] = [
 		name: 'filterContentUrlAutoUpdate',
 		store: filterContentUrlAutoUpdateStore,
 		schema: zBoolean
+	},
+	{
+		name: 'advancedTheming',
+		store: interfaceAdvancedThemingStore,
+		schema: zThemeColors,
+		serialize: JSON.stringify
 	}
 ];
 
diff --git a/materialious/src/lib/shared/theme.ts b/materialious/src/lib/shared/theme.ts
new file mode 100644
index 00000000..48204be0
--- /dev/null
+++ b/materialious/src/lib/shared/theme.ts
@@ -0,0 +1,38 @@
+export const SUPPORTED_THEME_KEYS: string[] = [
+	'--primary',
+	'--on-primary',
+	'--primary-container',
+	'--on-primary-container',
+	'--secondary',
+	'--on-secondary',
+	'--secondary-container',
+	'--on-secondary-container',
+	'--tertiary',
+	'--on-tertiary',
+	'--tertiary-container',
+	'--on-tertiary-container',
+	'--error',
+	'--on-error',
+	'--error-container',
+	'--on-error-container',
+	'--background',
+	'--on-background',
+	'--surface',
+	'--on-surface',
+	'--surface-variant',
+	'--on-surface-variant',
+	'--outline',
+	'--outline-variant',
+	'--shadow',
+	'--scrim',
+	'--inverse-surface',
+	'--inverse-on-surface',
+	'--inverse-primary',
+	'--surface-dim',
+	'--surface-bright',
+	'--surface-container-lowest',
+	'--surface-container-low',
+	'--surface-container',
+	'--surface-container-high',
+	'--surface-container-highest'
+] as const;
diff --git a/materialious/src/lib/theme.ts b/materialious/src/lib/theme.ts
index 4ac0f303..fb7cf1f4 100644
--- a/materialious/src/lib/theme.ts
+++ b/materialious/src/lib/theme.ts
@@ -116,45 +116,6 @@ export function setTheme() {
 	}
 }
 
-export const SUPPORTED_THEME_KEYS: ThemeKey[] = [
-	'--primary',
-	'--on-primary',
-	'--primary-container',
-	'--on-primary-container',
-	'--secondary',
-	'--on-secondary',
-	'--secondary-container',
-	'--on-secondary-container',
-	'--tertiary',
-	'--on-tertiary',
-	'--tertiary-container',
-	'--on-tertiary-container',
-	'--error',
-	'--on-error',
-	'--error-container',
-	'--on-error-container',
-	'--background',
-	'--on-background',
-	'--surface',
-	'--on-surface',
-	'--surface-variant',
-	'--on-surface-variant',
-	'--outline',
-	'--outline-variant',
-	'--shadow',
-	'--scrim',
-	'--inverse-surface',
-	'--inverse-on-surface',
-	'--inverse-primary',
-	'--surface-dim',
-	'--surface-bright',
-	'--surface-container-lowest',
-	'--surface-container-low',
-	'--surface-container',
-	'--surface-container-high',
-	'--surface-container-highest'
-] as const;
-
 export function setThemeColors(theme: ThemeColors) {
 	for (const [themeKey, themeValue] of Object.entries(theme)) {
 		setThemeColor(themeKey as ThemeKey, themeValue.trim());
diff --git a/materialious/src/routes/(app)/+layout.svelte b/materialious/src/routes/(app)/+layout.svelte
index 9be4c6c6..b00e8408 100644
--- a/materialious/src/routes/(app)/+layout.svelte
+++ b/materialious/src/routes/(app)/+layout.svelte
@@ -20,7 +20,6 @@
 		playerState,
 		playerTheatreModeIsActive,
 		rawMasterKeyStore,
-		themeColorStore,
 		backendInUseStore,
 		hideSearchStore
 	} from '$lib/store';
@@ -126,11 +125,6 @@
 		notifications = feed.notifications;
 	}
 
-	themeColorStore.subscribe(async (hex) => {
-		if (!hex) return;
-		await ui('theme', hex);
-	});
-
 	function resetScroll() {
 		const main = document.querySelector('main.root');
 		if (main) main.scrollTop = 0;
diff --git a/materialious/src/routes/+layout.svelte b/materialious/src/routes/+layout.svelte
index fa41b4f6..a30bd759 100644
--- a/materialious/src/routes/+layout.svelte
+++ b/materialious/src/routes/+layout.svelte
@@ -1,6 +1,7 @@
 <script lang="ts">
 	import {
 		darkModeStore,
+		interfaceAdvancedThemingStore,
 		interfaceAmoledTheme,
 		invidiousAuthStore,
 		isAndroidTvStore,
@@ -15,7 +16,7 @@
 	import 'beercss';
 	import 'material-dynamic-colors';
 
-	import { setAmoledTheme, setStatusBarColor, setTheme } from '$lib/theme';
+	import { setAmoledTheme, setStatusBarColor, setTheme, setThemeColors } from '$lib/theme';
 
 	import { pwaInfo } from 'virtual:pwa-info';
 	import { onMount } from 'svelte';
@@ -30,8 +31,18 @@
 
 	let { children } = $props();
 
+	themeColorStore.subscribe(async (hex) => {
+		if (!hex || Object.keys($interfaceAdvancedThemingStore).length > 0) return;
+		await ui('theme', hex);
+	});
+
+	interfaceAdvancedThemingStore.subscribe((colors) => {
+		setThemeColors(colors);
+	});
+
 	interfaceAmoledTheme.subscribe(async () => {
 		setAmoledTheme();
+		setThemeColors($interfaceAdvancedThemingStore);
 
 		await setStatusBarColor();
 	});
@@ -40,6 +51,8 @@
 		setTheme();
 		setAmoledTheme();
 
+		setThemeColors($interfaceAdvancedThemingStore);
+
 		await setStatusBarColor();
 	});
 
@@ -114,11 +127,6 @@
 		// Should always be loaded after env settings
 		// So user preferences overwrite instance preferences.
 		bookmarkletLoadFromUrl();
-
-		await setStatusBarColor();
-
-		setTheme();
-		setAmoledTheme();
 	});
 
 	let syncToSettingsInitialized = false;
diff --git a/materialious/src/routes/api/user/keyValue/[key]/+server.ts b/materialious/src/routes/api/user/keyValue/[key]/+server.ts
index 271db0c1..92ae79fc 100644
--- a/materialious/src/routes/api/user/keyValue/[key]/+server.ts
+++ b/materialious/src/routes/api/user/keyValue/[key]/+server.ts
@@ -25,7 +25,7 @@ export async function DELETE({ locals, params }) {
 }
 
 const zUpdateKeyStore = z.object({
-	valueCipher: z.string().max(1000),
+	valueCipher: z.string().max(3000),
 	valueNonce: z.string().max(255)
 });