diff --git a/TwVideoUp/App.xaml.cs b/TwVideoUp/App.xaml.cs
index d56875b..f5c993a 100644
--- a/TwVideoUp/App.xaml.cs
+++ b/TwVideoUp/App.xaml.cs
@@ -28,6 +28,7 @@ private void App_OnStartup(object sender, StartupEventArgs e)
             DispatcherUnhandledException += App_DisatacherUnhandledException;
             AppDomain.CurrentDomain.UnhandledException += CurrentDomain_UnhandledException;
 
+            SetAeroLiteStyle();
 
             var window = new MainWindow();
 
@@ -42,6 +43,23 @@ private void App_OnStartup(object sender, StartupEventArgs e)
             window.Show();
         }
 
+        /// <summary>
+        /// Windows 7 等のスタイルをAero Liteに設定します。
+        /// </summary>
+        private void SetAeroLiteStyle()
+        {
+            var version = Environment.OSVersion.Version;
+            if (version.Major > 6 || version.Minor > 1) {
+                return;
+            }
+            var theme = new ResourceDictionary()
+            {
+                Source = new Uri(@"/PresentationFramework.Aero2;component/themes/aero2.normalcolor.xaml", UriKind.Relative)
+            };
+            Resources.MergedDictionaries.Add(theme);
+        }
+
+
         /// <summary>
         /// アプリケーション終了時のイベントハンドラ
         /// </summary>
diff --git a/TwVideoUp/Core/Tools/PresentationFramework.Aero2.dll b/TwVideoUp/Core/Tools/PresentationFramework.Aero2.dll
new file mode 100644
index 0000000..ac5288c
Binary files /dev/null and b/TwVideoUp/Core/Tools/PresentationFramework.Aero2.dll differ
diff --git a/TwVideoUp/TwVideoUp.csproj b/TwVideoUp/TwVideoUp.csproj
index dcba4bd..56ecf29 100644
--- a/TwVideoUp/TwVideoUp.csproj
+++ b/TwVideoUp/TwVideoUp.csproj
@@ -28,6 +28,7 @@
     <ApplicationVersion>1.0.0.%2a</ApplicationVersion>
     <UseApplicationTrust>false</UseApplicationTrust>
     <BootstrapperEnabled>true</BootstrapperEnabled>
+    <TargetFrameworkProfile />
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <PlatformTarget>AnyCPU</PlatformTarget>
@@ -85,6 +86,12 @@
     <Reference Include="Newtonsoft.Json, Version=12.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
       <HintPath>..\packages\Newtonsoft.Json.12.0.1\lib\net45\Newtonsoft.Json.dll</HintPath>
     </Reference>
+    <Reference Include="PresentationFramework.Aero2">
+      <Private>True</Private>
+    </Reference>
+    <Reference Include="PresentationFramework.AeroLite">
+      <Private>True</Private>
+    </Reference>
     <Reference Include="System" />
     <Reference Include="System.Xml" />
     <Reference Include="System.Core" />
@@ -195,6 +202,9 @@
   <ItemGroup>
     <SplashScreen Include="Resources\splash.png" />
   </ItemGroup>
+  <ItemGroup>
+    <Content Include="Core\Tools\PresentationFramework.Aero2.dll" />
+  </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.