diff --git a/app/_config.py b/app/_config.py
index b8393eb..dd3ddb8 100644
--- a/app/_config.py
+++ b/app/_config.py
@@ -10,12 +10,11 @@ app_debug = True
 app_maintenance = False
 
 app_name = 'takeus-ipam'
-app_version = 'V1.4'
+app_version = 'V1.5'
 app_release_date = '04/2025'
 app_url = "http://0.0.0.0"
 
-app_theme = 'default'  # default, lumen, simplex, zephyr
-
+app_theme = ['default', 'lumen', 'simplex', 'zephyr']
 class Configuration:
     # replace SECRET_KEY with value from "openssl rand -hex 32" or similar for STATIC sessions
     # With actual configuration, every application restart, user have to re-login...
diff --git a/app/models.py b/app/models.py
index e5675b1..234bd3a 100644
--- a/app/models.py
+++ b/app/models.py
@@ -7,6 +7,7 @@ class User(UserMixin, db.Model):
     password = db.Column(db.String(32))
     is_admin = db.Column(db.Boolean(),default=False)
     is_reado = db.Column(db.Boolean(),default=False)
+    ui_theme = db.Column(db.String(16))
     dat_last = db.Column(db.DateTime())
     
 class Network(db.Model):
diff --git a/app/routes/r_auth.py b/app/routes/r_auth.py
index 646cd4a..de2e826 100644
--- a/app/routes/r_auth.py
+++ b/app/routes/r_auth.py
@@ -31,7 +31,7 @@ def login():
 
         flash("Bad username or password !", 'danger')
         return render_template("auth/login.html", title="Login", form=form, bad_password=True)
-    return render_template('auth/login.html', title="Login", form=form, app_theme=app_theme)
+    return render_template('auth/login.html', title="Login", form=form)
 
 @auth.route("/change",methods=['GET','POST'])
 @login_required
diff --git a/app/routes/r_base.py b/app/routes/r_base.py
index 0722587..552d95c 100644
--- a/app/routes/r_base.py
+++ b/app/routes/r_base.py
@@ -28,7 +28,6 @@ def dashboard():
     for available_ip in Network.query.all():
         available_alloc += int(available_ip.hosts)
     
-    print(app_theme)
     return render_template(
         'panel/dashboard.html',
         title="Dashboard", 
@@ -41,6 +40,14 @@ def dashboard():
         available_alloc=available_alloc,
         db_users=db_users,
         Inventory=Inventory,
-        navcolor='dark',
-        app_theme=app_theme
-    )
\ No newline at end of file
+        navcolor='dark'
+    )
+    
+@base.route("/theme/<string:name>",methods=['GET','POST'])
+@login_required
+def change_theme(name):
+    if name in app_theme:
+        current_user.ui_theme = name
+        db.session.commit()
+        return redirect(url_for('base.dashboard'))
+    return 'Invalid theme name', 400
\ No newline at end of file
diff --git a/app/routes/r_inventory.py b/app/routes/r_inventory.py
index a35b757..3ddde7c 100644
--- a/app/routes/r_inventory.py
+++ b/app/routes/r_inventory.py
@@ -4,7 +4,6 @@ from flask_login import login_required, current_user
 from app.extensions import *
 from app.models import *
 from app.forms import NewInventoryItem, ChangeInventoryItem
-from app._config import app_theme
 
 inventory = Blueprint('inventory', __name__)
 
@@ -21,7 +20,7 @@ def add_item():
             db.session.commit()
             flash("Item ADDED", 'success')
     
-    return render_template('panel/inventory_add.html', title='ADD ITEM', form=form, navcolor='success', app_theme=app_theme)
+    return render_template('panel/inventory_add.html', title='ADD ITEM', form=form, navcolor='success')
 
 @inventory.route('/list/<int:item_type>', methods=['GET','POST'])
 @login_required
@@ -44,7 +43,7 @@ def list_items(item_type):
     else:
         title = 'All'
     
-    return render_template('panel/inventory_view.html', title=title, item_list=db_items, current_page=item_type, navcolor='success', app_theme=app_theme)
+    return render_template('panel/inventory_view.html', title=title, item_list=db_items, current_page=item_type, navcolor='success')
 
 @inventory.route('/action/<int:item_id>/<int:action>', methods=['GET','POST'])
 @login_required
diff --git a/app/routes/r_networks.py b/app/routes/r_networks.py
index 60a3875..d735d5b 100644
--- a/app/routes/r_networks.py
+++ b/app/routes/r_networks.py
@@ -2,7 +2,7 @@ from flask import Blueprint, request, render_template, flash, redirect, url_for,
 from flask_login import login_required, current_user
 from ipaddress import IPv4Network, IPv4Address
 
-from app._config import app_version, app_theme
+from app._config import app_version
 
 from app.extensions import *
 from app.models import *
@@ -36,7 +36,7 @@ def networks():
         elif form.errors:
             flash(form.errors, 'danger')
     
-    return render_template('panel/networks.html', title="Prefixes", is_networks=True, app_version=app_version, app_theme=app_theme, prefixes=networks, form=form, Allocation=Allocation, navcolor='dark')
+    return render_template('panel/networks.html', title="Prefixes", is_networks=True, app_version=app_version, prefixes=networks, form=form, Allocation=Allocation, navcolor='dark')
 
 @network.route('/<int:net_id>/allocations',methods=['GET','POST'])
 @login_required
@@ -60,7 +60,7 @@ def allocations(net_id):
     db_network = Network.query.filter_by(id=net_id).first()
     db_allocations = db.paginate(db.select(Allocation).filter_by(net_id=net_id), per_page=session['items'] )
     
-    return render_template('panel/allocations.html', title="Allocations", is_networks=True, app_version=app_version, app_theme=app_theme, allocations=db_allocations, network=db_network, Inventory=Inventory, active_page=active_page, next_page=next_page, prev_page=prev_page, navcolor='dark')
+    return render_template('panel/allocations.html', title="Allocations", is_networks=True, app_version=app_version, allocations=db_allocations, network=db_network, Inventory=Inventory, active_page=active_page, next_page=next_page, prev_page=prev_page, navcolor='dark')
 
 ## MODAL ROUTES
 
diff --git a/app/templates/auth/_base.html b/app/templates/auth/_base.html
index 73ef36b..9ab98d7 100644
--- a/app/templates/auth/_base.html
+++ b/app/templates/auth/_base.html
@@ -11,11 +11,11 @@
     <!-- LINKS -->
     <link rel="icon" type="image/png" href="{{ url_for('static',filename='img/logo.png') }}" />
     <link rel="stylesheet" href="{{ url_for('static',filename='css/custom.css') }}"/>
-    {% if app_theme == 'zephyr'%}
+    {% if current_user.ui_theme == 'zephyr'%}
     <link rel="stylesheet" href="{{ url_for('static',filename='css/Bootstrap/zephyr.css') }}"/>
-    {% elif app_theme == 'lumen' %}
+    {% elif current_user.ui_theme == 'lumen' %}
     <link rel="stylesheet" href="{{ url_for('static',filename='css/Bootstrap/lumen.css') }}"/>
-    {% elif app_theme == 'simplex' %}
+    {% elif current_user.ui_theme == 'simplex' %}
     <link rel="stylesheet" href="{{ url_for('static',filename='css/Bootstrap/simplex.css') }}"/>
     {% else %}
     <link rel="stylesheet" href="{{ url_for('static',filename='css/bootstrap.min.css') }}"/>
diff --git a/app/templates/panel/_base.html b/app/templates/panel/_base.html
index 0c9f96b..dde604a 100644
--- a/app/templates/panel/_base.html
+++ b/app/templates/panel/_base.html
@@ -11,11 +11,11 @@
     <!-- LINKS -->
     <link rel="icon" type="image/png" href="{{ url_for('static',filename='img/logo.png') }}" />
     <link rel="stylesheet" href="{{ url_for('static',filename='css/custom.css') }}"/>
-    {% if app_theme == 'zephyr' %}
+    {% if current_user.ui_theme == 'zephyr' %}
     <link rel="stylesheet" href="{{ url_for('static',filename='css/Bootstrap/zephyr.css') }}"/>
-    {% elif app_theme == 'lumen' %}
+    {% elif current_user.ui_theme == 'lumen' %}
     <link rel="stylesheet" href="{{ url_for('static',filename='css/Bootstrap/lumen.css') }}"/>
-    {% elif app_theme == 'simplex' %}
+    {% elif current_user.ui_theme == 'simplex' %}
     <link rel="stylesheet" href="{{ url_for('static',filename='css/Bootstrap/simplex.css') }}"/>
     {% else %}
     <link rel="stylesheet" href="{{ url_for('static',filename='css/bootstrap.min.css') }}"/>
diff --git a/app/templates/panel/_nav.html b/app/templates/panel/_nav.html
index 6acd304..2ee8c38 100644
--- a/app/templates/panel/_nav.html
+++ b/app/templates/panel/_nav.html
@@ -30,8 +30,19 @@
             </li>
             {% endif %}
             </ul>
-            <div class="d-flex">
-                <a class="btn btn-outline-warning" type="submit" href="{{ url_for('auth.logout') }}">logout</a>
+            <div class="d-grid gap-2 d-md-flex justify-content-md-end">
+                <div class="btn-group dropstart">
+                    <button type="button" class="btn btn-secondary btn-sm dropdown-toggle" data-bs-toggle="dropdown" aria-expanded="false">
+                        UI
+                    </button>
+                    <ul class="dropdown-menu">
+                        <li><a class="dropdown-item" href="{{ url_for('base.change_theme',name='default') }}">default</a></li>
+                        <li><a class="dropdown-item" href="{{ url_for('base.change_theme',name='zephyr') }}">Zephyr</a></li>
+                        <li><a class="dropdown-item" href="{{ url_for('base.change_theme',name='simplex') }}">Simplex</a></li>
+                        <li><a class="dropdown-item" href="{{ url_for('base.change_theme',name='lumen') }}">Lumen</a></li>
+                    </ul>
+                    </div>
+                <a class="btn btn-outline-warning btn-sm" type="submit" href="{{ url_for('auth.logout') }}">logout</a>
             </div>
         </div>
     </div>
diff --git a/setup.py b/setup.py
index e0e64b9..7143b76 100755
--- a/setup.py
+++ b/setup.py
@@ -14,6 +14,7 @@ class User(db.Model):
     password = db.Column(db.String(32))
     is_admin = db.Column(db.Boolean(),default=False)
     is_reado = db.Column(db.Boolean(),default=False)
+    ui_theme = db.Column(db.String(16))
     dat_last = db.Column(db.DateTime())
     
 with app.app_context():