App.xaml

<prism:PrismApplication
    xmlns="http://xamarin.com/schemas/2014/forms"
    xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
    xmlns:d="http://xamarin.com/schemas/2014/forms/design"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:prism="clr-namespace:Prism.DryIoc;assembly=Prism.DryIoc.Forms"
    mc:Ignorable="d"
    x:Class="MyDimDim.App">
    <Application.Resources>
        <Color x:Key="ColorPrimary">#214f22</Color>
        <Color x:Key="ColorPrimaryDark">#163617</Color>
        <Color x:Key="ColorAccent">#214f22</Color>
        <Color x:Key="ColorRevenue">#18780a</Color>
        <Color x:Key="ColorExpense">#c41212</Color>
        <Color x:Key="ColorTransfer">#146ae3</Color>

        <Style TargetType="NavigationPage">
            <Setter Property="BarBackgroundColor" Value="{StaticResource ColorPrimary}" />
            <Setter Property="BarTextColor" Value="White" />
        </Style>

    </Application.Resources>
</prism:PrismApplication>