<Application x:Class="TitanStudioWpf.App" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:materialDesign="http://materialdesigninxaml.net/winfx/xaml/themes" xmlns:local="clr-namespace:TitanStudioWpf"> <Application.Resources> <ResourceDictionary> <ResourceDictionary.MergedDictionaries> <materialDesign:BundledTheme BaseTheme="Dark" PrimaryColor="DeepPurple" SecondaryColor="Lime" /> <ResourceDictionary Source="pack://application:,,,/MaterialDesignThemes.Wpf;component/Themes/MaterialDesign3.Defaults.xaml" /> <ResourceDictionary Source="/TitanStudioWpf.Core;component/Resources/Theme.xaml" /> </ResourceDictionary.MergedDictionaries> </ResourceDictionary> </Application.Resources></Application>