<Application.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <hc:ThemeResources>
                    <hc:ThemeResources.ThemeDictionaries>
                        <ResourceDictionary x:Key="Light" hc:ThemeDictionary.Key="Light">

                            <!--  Put the resources you want to use in the Light theme Here  -->

                            <!--<SolidColorBrush x:Key="PrimaryBrush" Color="Red" />
                            <SolidColorBrush x:Key="AppBackgroundBrush" Color="#FFF1F1F1" />-->

                            <CornerRadius x:Key="DefaultCornerRadius" BottomLeft="0"
                                          BottomRight="0" TopLeft="0"
                                          TopRight="0" />
                        </ResourceDictionary>
                    </hc:ThemeResources.ThemeDictionaries>
                </hc:ThemeResources>

                <hc:Theme />
            </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>
    </Application.Resources>