diff --git a/gui/gui.ui b/gui/gui.ui
index 1c5d9cc..3d38c57 100644
--- a/gui/gui.ui
+++ b/gui/gui.ui
@@ -267,6 +267,13 @@ QSpinBox::up-button {
 QSpinBox::down-button {
     border: none;
     background: none;
+}
+
+QToolBox::tab {
+    border-style: solid;
+    border-width: 1px;
+    border-radius: 5px;
+    border-color: #303030;
 }</string>
   </property>
   <widget class="QWidget" name="centralwidget">
diff --git a/gui/modules/core/items_list.py b/gui/modules/core/items_list.py
index 34a63f2..899319d 100644
--- a/gui/modules/core/items_list.py
+++ b/gui/modules/core/items_list.py
@@ -34,7 +34,7 @@ def refill_list(ui: Ui_MainWindow):
                 continue
 
             list_item = QtWidgets.QListWidgetItem()
-            if Config.get().profile:
+            if Config.get().profile in list(Database.get().profiles):
                 ui.own_button.setEnabled(True)
 
                 if item.item_name in Database.get_profile().owned_items:
@@ -47,7 +47,7 @@ def refill_list(ui: Ui_MainWindow):
 
             list_item.setText(
                 f''
-                f'{"☑" if Config.get().profile and item.item_name in Database.get_profile().owned_items else ""}'
+                f'{"☑" if Config.get().profile in list(Database.get().profiles) and item.item_name in Database.get_profile().owned_items else ""}'
                 f'{item.item_name} - ${"{:,}".format(item.price)}'
             )
             pixmap = QtGui.QPixmap()
diff --git a/gui/modules/handlers/fill_info.py b/gui/modules/handlers/fill_info.py
index e1b461a..c709803 100644
--- a/gui/modules/handlers/fill_info.py
+++ b/gui/modules/handlers/fill_info.py
@@ -18,7 +18,7 @@ def on_item_click(ui: Ui_MainWindow, mode: str):
             ui.properties_image.clear()
             print(f"Failed to load {item.image}, {e}")
 
-        if Config.get().profile:
+        if Config.get().profile in list(Database.get().profiles):
             ui.own_button.setEnabled(True)
 
             if item.item_name in Database.get_profile().owned_items:
diff --git a/gui/modules/initialize/styles.py b/gui/modules/initialize/styles.py
index f448a17..ca9e429 100644
--- a/gui/modules/initialize/styles.py
+++ b/gui/modules/initialize/styles.py
@@ -280,6 +280,13 @@ QSpinBox::down-button {
     border: none;
     background: none;
 }
+
+QToolBox::tab {
+    border-style: solid;
+    border-width: 1px;
+    border-radius: 5px;
+    border-color: rgba(48, 48, 48, 0);
+}
 """
 
 menupage_b = """
@@ -545,6 +552,13 @@ QSpinBox::down-button {
     border: none;
     background: none;
 }
+
+QToolBox::tab {
+    border-style: solid;
+    border-width: 1px;
+    border-radius: 5px;
+    border-color: #303030;
+}
 """
 
 menupage_g = """
diff --git a/gui/modules/settings/__init__.py b/gui/modules/settings/__init__.py
index 1f9d8e0..0e991d0 100644
--- a/gui/modules/settings/__init__.py
+++ b/gui/modules/settings/__init__.py
@@ -1,2 +1,4 @@
 from .on_settings_open import *
-from .handlers import *
\ No newline at end of file
+from .db import *
+from .visual import *
+from .handlers import *
diff --git a/gui/modules/settings/db.py b/gui/modules/settings/db.py
new file mode 100644
index 0000000..be6a5b7
--- /dev/null
+++ b/gui/modules/settings/db.py
@@ -0,0 +1,12 @@
+from gui.gui import Ui_MainWindow
+from modules.config import Config
+from gui.modules.core import items_list
+
+
+def on_load_another_db_click(ui: Ui_MainWindow):
+    Config.update("database", ui.database_list_box.currentText())
+    items_list.refill_list(ui)
+
+
+def register_db_handlers(ui: Ui_MainWindow):
+    ui.load_this_db_button.clicked.connect(lambda: on_load_another_db_click(ui))
diff --git a/gui/modules/settings/handlers.py b/gui/modules/settings/handlers.py
index 834418c..61bb786 100644
--- a/gui/modules/settings/handlers.py
+++ b/gui/modules/settings/handlers.py
@@ -1,6 +1,11 @@
 from . import *
+from gui.gui import Ui_MainWindow
 
 
 def register_handlers(ui: Ui_MainWindow):
-    ui.open_settings_button.clicked.connect(lambda: on_settings_button_click(ui))
+    ui.open_settings_button.clicked.connect(lambda: on_settings_open.on_settings_button_click(ui))
     ui.cancel_settings_button.clicked.connect(lambda: ui.content.setCurrentWidget(ui.main_page))
+
+    ui.save_gui_setting_button.clicked.connect(lambda: visual.on_save_visual_click(ui))
+
+    db.register_db_handlers(ui)
diff --git a/gui/modules/settings/visual.py b/gui/modules/settings/visual.py
new file mode 100644
index 0000000..0b46227
--- /dev/null
+++ b/gui/modules/settings/visual.py
@@ -0,0 +1,6 @@
+from gui.gui import Ui_MainWindow
+from modules.config import Config
+
+
+def on_save_visual_click(ui: Ui_MainWindow):
+    Config.update("theme", ui.app_theme_box.currentText())
diff --git a/modules/database/database.py b/modules/database/database.py
index fc3bb5e..7aca17b 100644
--- a/modules/database/database.py
+++ b/modules/database/database.py
@@ -12,6 +12,8 @@ class Database:
             print(f"Cannot load database: {e}. Writing default database")
             print("Old data:")
             print(open(Config.get().database).read())
+            with open("error.baseback", 'w') as f:
+                f.write(open(Config.get().database).read())
             with open(Config.get().database, 'w') as f:
                 json.dump(default_database, f, indent=4)
             return DatabaseModel.from_dict(default_database)