첨부 실행 코드는 나눔고딕코딩 폰트를 사용합니다.

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TestProject.zip
다운로드

▶ MainPage.xaml

<Page x:Class="TestProject.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
    <Grid>
        <Grid.Background>
            <SolidColorBrush x:Name="gridBackgroundBrush" />
        </Grid.Background>
        <TextBlock
            HorizontalAlignment="Center"
            VerticalAlignment="Center"
            FontFamily="나눔고딕코딩"
            FontSize="96"
            FontWeight="Bold"
            Text="안녕하세요">
            <TextBlock.Foreground>
                <SolidColorBrush x:Name="textBlockBackgroundBrush" />
            </TextBlock.Foreground>
        </TextBlock>
    </Grid>
</Page>

 

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▶ MainPage.xaml.cs

using Windows.UI;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Media;

namespace TestProject
{
    /// <summary>
    /// 메인 페이지
    /// </summary>
    public sealed partial class MainPage : Page
    {
        //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor
        ////////////////////////////////////////////////////////////////////////////////////////// Public

        #region 생성자 - MainPage()

        /// <summary>
        /// 생성자
        /// </summary>
        public MainPage()
        {
            InitializeComponent();

            CompositionTarget.Rendering += CompositionTarget_Rendering;
        }

        #endregion

        //////////////////////////////////////////////////////////////////////////////////////////////////// Method
        ////////////////////////////////////////////////////////////////////////////////////////// Private

        #region 구성 타겟 렌더링시 처리하기 - CompositionTarget_Rendering(sender, e)

        /// <summary>
        /// 구성 타겟 렌더링시 처리하기
        /// </summary>
        /// <param name="sender">이벤트 발생자</param>
        /// <param name="e">이벤트 인자</param>
        private void CompositionTarget_Rendering(object sender, object e)
        {
            RenderingEventArgs renderingEventArgs = e as RenderingEventArgs;

            double t = (0.25 * renderingEventArgs.RenderingTime.TotalSeconds) % 1;

            t = t < 0.5 ? 2 * t : 2 - 2 * t;

            // 배경색
            byte backgroundGrayscale = (byte)(255 * t);

            this.gridBackgroundBrush.Color = Color.FromArgb(255, backgroundGrayscale, backgroundGrayscale, backgroundGrayscale);

            // 전경색
            byte foregroundGrayscale = (byte)(255 - backgroundGrayscale);

            this.textBlockBackgroundBrush.Color = Color.FromArgb(255, foregroundGrayscale, foregroundGrayscale, foregroundGrayscale);
        }

        #endregion
    }
}
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