diff --git a/Ooui.Forms/Forms.cs b/Ooui.Forms/Forms.cs
index bb70872..8cd6ace 100644
--- a/Ooui.Forms/Forms.cs
+++ b/Ooui.Forms/Forms.cs
@@ -7,6 +7,8 @@ using System.Threading;
 using System.Threading.Tasks;
 using Ooui;
 using System.Net.Http;
+using System.Collections.Generic;
+using System.Linq;
 
 namespace Xamarin.Forms
 {
@@ -59,7 +61,7 @@ namespace Xamarin.Forms
 
             public string RuntimePlatform => "Ooui";
 
-            public OSAppTheme RequestedTheme => throw new NotImplementedException();
+            public OSAppTheme RequestedTheme => OSAppTheme.Unspecified;
 
             public void BeginInvokeOnMainThread (Action action)
             {
@@ -176,15 +178,21 @@ namespace Xamarin.Forms
             }
 
             public string GetHash(string input)
-            {
-
-                
+            {                
                 return Utilities.GetHash(input);
             }
 
+            static readonly Dictionary<string, Color> colorNames =
+                typeof (Color)
+                .GetFields (BindingFlags.Static | BindingFlags.Public)
+                .Where(x => x.FieldType == typeof(Color))
+                .ToDictionary (x => x.Name, x => (Color)x.GetValue (null));
+
             public Color GetNamedColor(string name)
             {
-                throw new NotImplementedException();
+                if (colorNames.TryGetValue (name, out var color))
+                    return color;
+                return Color.Default;
             }
         }
 
diff --git a/PlatformSamples/AspNetCoreMvc/AspNetCoreMvc.csproj b/PlatformSamples/AspNetCoreMvc/AspNetCoreMvc.csproj
index 35ef428..433e961 100644
--- a/PlatformSamples/AspNetCoreMvc/AspNetCoreMvc.csproj
+++ b/PlatformSamples/AspNetCoreMvc/AspNetCoreMvc.csproj
@@ -1,21 +1,13 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp3.0</TargetFramework>
-    <MvcRazorCompileOnPublish>true</MvcRazorCompileOnPublish>
-    <AssetTargetFallback>$(AssetTargetFallback);portable-net45+win8+wp8+wpa81;</AssetTargetFallback>
-    <UserSecretsId>aspnet-AspNetCoreMvc-F1609F62-F713-4EFE-9B42-D8206BFB2F63</UserSecretsId>
-    <StartupObject></StartupObject>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>
     <PackageReference Include="Xamarin.Forms" Version="5.0.0.2012" />
   </ItemGroup>
 
-  <ItemGroup>
-    <DotNetCliToolReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Tools" Version="2.0.0-preview2-final" />
-  </ItemGroup>
-
   <ItemGroup>
     <ProjectReference Include="..\..\Ooui.AspNetCore\Ooui.AspNetCore.csproj" />
     <ProjectReference Include="..\..\Ooui\Ooui.csproj" />
diff --git a/PlatformSamples/AspNetCoreMvc/Program.cs b/PlatformSamples/AspNetCoreMvc/Program.cs
index ac9502b..11c9276 100644
--- a/PlatformSamples/AspNetCoreMvc/Program.cs
+++ b/PlatformSamples/AspNetCoreMvc/Program.cs
@@ -6,6 +6,7 @@ using System.Threading.Tasks;
 using Microsoft.AspNetCore;
 using Microsoft.AspNetCore.Hosting;
 using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.Hosting;
 using Microsoft.Extensions.Logging;
 
 namespace AspNetCoreMvc
@@ -14,13 +15,13 @@ namespace AspNetCoreMvc
     {
         public static void Main (string[] args)
         {
-            BuildWebHost (args).Run ();
+            CreateHostBuilder (args).Build ().Run ();
         }
 
-        public static IWebHost BuildWebHost (string[] args) =>
-            WebHost.CreateDefaultBuilder (args)
-                   .UseConfiguration (new ConfigurationBuilder ().AddCommandLine (args).Build ())
-                   .UseStartup<Startup> ()
-                   .Build ();
+        public static IHostBuilder CreateHostBuilder (string[] args) =>
+            Host.CreateDefaultBuilder (args)
+                .ConfigureWebHostDefaults (webBuilder => {
+                    webBuilder.UseStartup<Startup> ();
+                });
     }
 }
diff --git a/PlatformSamples/AspNetCoreMvc/Startup.cs b/PlatformSamples/AspNetCoreMvc/Startup.cs
index babc056..603e1b9 100644
--- a/PlatformSamples/AspNetCoreMvc/Startup.cs
+++ b/PlatformSamples/AspNetCoreMvc/Startup.cs
@@ -1,11 +1,9 @@
 using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Hosting;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
 
 namespace AspNetCoreMvc
 {
@@ -21,30 +19,33 @@ namespace AspNetCoreMvc
         // This method gets called by the runtime. Use this method to add services to the container.
         public void ConfigureServices (IServiceCollection services)
         {
-
-            services.AddMvc ();
+            services.AddControllersWithViews ();
         }
 
         // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
-        public void Configure (IApplicationBuilder app, IHostingEnvironment env)
+        public void Configure (IApplicationBuilder app, IWebHostEnvironment env)
         {
             if (env.IsDevelopment ()) {
                 app.UseDeveloperExceptionPage ();
             }
             else {
                 app.UseExceptionHandler ("/Home/Error");
+                app.UseHsts ();
             }
 
+            //app.UseHttpsRedirection ();
             app.UseStaticFiles ();
 
+            app.UseRouting ();
+
             app.UseOoui ();
 
             Xamarin.Forms.Forms.Init ();
 
-            app.UseMvc (routes => {
-                routes.MapRoute (
+            app.UseEndpoints (endpoints => {
+                endpoints.MapControllerRoute (
                     name: "default",
-                    template: "{controller=Home}/{action=Index}/{id?}");
+                    pattern: "{controller=Home}/{action=Index}/{id?}");
             });
         }
     }