我正在使用static resource设置button的text和backgroundcolor，但根本不显示颜色。
我已经在共享项目中的项目级别上添加了Theme.cs文件。t

public static class Theme
{
    public static Color Application_GreenColor = Color.FromHex("5EC451");
    public static Color Application_RedColor = Color.FromHex("#EC3323");
}

在此xaml文件下面，设置button上的颜色

<?xml version="1.0" encoding="utf-8" ?>
<Grid
    xmlns="http://xamarin.com/schemas/2014/forms"
    xmlns:local="clr-namespace:projectName;assembly=projectName"
    xmlns:extensions="clr-namespace:projectName.Extensions.MarkupExtensions;assembly=projectName"
    x:Class="path/projectName">
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition
                Height="Auto" />
            <RowDefinition
                Height="Auto" />
        </Grid.RowDefinitions>
        <Grid
            Grid.Row="1"
            Margin="20,20,20,20">
            <Grid.ColumnDefinitions>
                <ColumnDefinition
                    Width="*" />
                <ColumnDefinition
                    Width="*" />
            </Grid.ColumnDefinitions>
           <Button
            Margin="0,0,0,0"
            Command="{Binding ConfirmCardCommand}"
            Text="CardOperationsView"
            FontSize="Medium"
            CornerRadius="30"
            ContentLayout="Right"
            TextColor="{x:Static local:Theme.Application_PrimaryButtonTextColor}"
            Grid.Column="1"
            HorizontalOptions="FillAndExpand"
            VerticalOptions="Center"
            BackgroundColor="{x:Static local:Theme.Application_RedColor}" />
        </Grid>
    </Grid>
</Grid>

以上UI用于弹出窗口。这是如何打开弹出窗口

private async Task ShowCardDialogAsync()
{
    _CardPopup = await DialogHelper.ShowCustomBottomPopupAsync(new CardPopupTemplate(), this);
}

从xaml Button是没有任何背景和文本颜色。我如何解决这个问题？