Small UI changes (#3787)

API/DTOs/Theme/ColorScapeDto.cs

@@ -4,7 +4,7 @@
 /// <summary>
 /// A set of colors for the color scape system in the UI
 /// </summary>
-public class ColorScapeDto
+public sealed record ColorScapeDto
 {
     public string? Primary { get; set; }
     public string? Secondary { get; set; }

API/DTOs/Theme/DownloadableSiteThemeDto.cs

@@ -4,7 +4,7 @@ using System.Collections.Generic;
 namespace API.DTOs.Theme;
 
 
-public class DownloadableSiteThemeDto
+public sealed record DownloadableSiteThemeDto
 {
     /// <summary>
     /// Theme Name

API/DTOs/Theme/SiteThemeDto.cs

@@ -7,7 +7,7 @@ namespace API.DTOs.Theme;
 /// <summary>
 /// Represents a set of css overrides the user can upload to Kavita and will load into webui
 /// </summary>
-public class SiteThemeDto
+public sealed record SiteThemeDto
 {
     public int Id { get; set; }
     /// <summary>

API/DTOs/Theme/UpdateDefaultThemeDto.cs

@@ -1,6 +1,6 @@
 namespace API.DTOs.Theme;
 
-public class UpdateDefaultThemeDto
+public sealed record UpdateDefaultThemeDto
 {
     public int ThemeId { get; set; }
 }