Cleaning up the solution. Separating Shared.WinRT, Services and Synchronization. Removing synchronization from app. Reducing bundle size by 45mb.

Wino.Shared.WinRT/Models/Personalization/CustomAppTheme.cs

@@ -0,0 +1,31 @@
+using System;
+using System.Threading.Tasks;
+using Windows.Storage;
+using Wino.Domain.Enums;
+using Wino.Domain.Models.Personalization;
+using Wino.Shared.WinRT.Services;
+
+namespace Wino.Shared.WinRT.Models.Personalization
+{
+    /// <summary>
+    /// Custom themes that are generated by users.
+    /// </summary>
+    public class CustomAppTheme : AppThemeBase
+    {
+        public CustomAppTheme(CustomThemeMetadata metadata) : base(metadata.Name, metadata.Id)
+        {
+            AccentColor = metadata.AccentColorHex;
+        }
+
+        public override AppThemeType AppThemeType => AppThemeType.Custom;
+
+        public override string GetBackgroundPreviewImagePath()
+            => $"ms-appdata:///local/{ThemeService.CustomThemeFolderName}/{Id}_preview.jpg";
+
+        public override async Task<string> GetThemeResourceDictionaryContentAsync()
+        {
+            var customAppThemeFile = await StorageFile.GetFileFromApplicationUriAsync(new Uri("ms-appx:///AppThemes/Custom.xaml"));
+            return await FileIO.ReadTextAsync(customAppThemeFile);
+        }
+    }
+}