diff --git a/Ryujinx.Core/OsHle/Services/FspSrv/IFileSystem.cs b/Ryujinx.Core/OsHle/Services/FspSrv/IFileSystem.cs
index 7db081548..3593bafbb 100644
--- a/Ryujinx.Core/OsHle/Services/FspSrv/IFileSystem.cs
+++ b/Ryujinx.Core/OsHle/Services/FspSrv/IFileSystem.cs
@@ -50,7 +50,7 @@ namespace Ryujinx.Core.OsHle.IpcServices.FspSrv
         {
             long Position = Context.Request.PtrBuff[0].Position;
 
-            string Name = ReadUtf8String(Context.Memory, Position);
+            string Name = ReadUtf8String(Context);
 
             long Mode = Context.RequestData.ReadInt64();
             int  Size = Context.RequestData.ReadInt32();
@@ -84,7 +84,7 @@ namespace Ryujinx.Core.OsHle.IpcServices.FspSrv
         {
             long Position = Context.Request.PtrBuff[0].Position;
 
-            string Name = ReadUtf8String(Context.Memory, Position);
+            string Name = ReadUtf8String(Context);
 
             string FileName = Context.Ns.VFs.GetFullPath(Path, Name);
 
@@ -107,7 +107,7 @@ namespace Ryujinx.Core.OsHle.IpcServices.FspSrv
         {
             long Position = Context.Request.PtrBuff[0].Position;
 
-            string Name = ReadUtf8String(Context.Memory, Position);
+            string Name = ReadUtf8String(Context);
 
             string DirName = Context.Ns.VFs.GetFullPath(Path, Name);
 
@@ -145,7 +145,7 @@ namespace Ryujinx.Core.OsHle.IpcServices.FspSrv
         {
             long Position = Context.Request.PtrBuff[0].Position;
 
-            string Name = ReadUtf8String(Context.Memory, Position);
+            string Name = ReadUtf8String(Context);
 
             string DirName = Context.Ns.VFs.GetFullPath(Path, Name);
 
@@ -166,11 +166,8 @@ namespace Ryujinx.Core.OsHle.IpcServices.FspSrv
 
         public long RenameFile(ServiceCtx Context)
         {
-            long OldPosition = Context.Request.PtrBuff[0].Position;
-            long NewPosition = Context.Request.PtrBuff[0].Position;
-
-            string OldName = ReadUtf8String(Context.Memory, OldPosition);
-            string NewName = ReadUtf8String(Context.Memory, NewPosition);
+            string OldName = ReadUtf8String(Context, 0);
+            string NewName = ReadUtf8String(Context, 1);
 
             string OldFileName = Context.Ns.VFs.GetFullPath(Path, OldName);
             string NewFileName = Context.Ns.VFs.GetFullPath(Path, NewName);
@@ -197,11 +194,8 @@ namespace Ryujinx.Core.OsHle.IpcServices.FspSrv
 
         public long RenameDirectory(ServiceCtx Context)
         {
-            long OldPosition = Context.Request.PtrBuff[0].Position;
-            long NewPosition = Context.Request.PtrBuff[0].Position;
-
-            string OldName = ReadUtf8String(Context.Memory, OldPosition);
-            string NewName = ReadUtf8String(Context.Memory, NewPosition);
+            string OldName = ReadUtf8String(Context, 0);
+            string NewName = ReadUtf8String(Context, 1);
 
             string OldDirName = Context.Ns.VFs.GetFullPath(Path, OldName);
             string NewDirName = Context.Ns.VFs.GetFullPath(Path, NewName);
@@ -230,7 +224,7 @@ namespace Ryujinx.Core.OsHle.IpcServices.FspSrv
         {
             long Position = Context.Request.PtrBuff[0].Position;
 
-            string Name = ReadUtf8String(Context.Memory, Position);
+            string Name = ReadUtf8String(Context);
 
             string FileName = Context.Ns.VFs.GetFullPath(Path, Name);
 
@@ -258,7 +252,7 @@ namespace Ryujinx.Core.OsHle.IpcServices.FspSrv
 
             int FilterFlags = Context.RequestData.ReadInt32();
 
-            string Name = ReadUtf8String(Context.Memory, Position);
+            string Name = ReadUtf8String(Context);
 
             string FileName = Context.Ns.VFs.GetFullPath(Path, Name);
 
@@ -294,7 +288,7 @@ namespace Ryujinx.Core.OsHle.IpcServices.FspSrv
 
             int FilterFlags = Context.RequestData.ReadInt32();
 
-            string Name = ReadUtf8String(Context.Memory, Position);
+            string Name = ReadUtf8String(Context);
 
             string DirName = Context.Ns.VFs.GetFullPath(Path, Name);
 
@@ -331,7 +325,7 @@ namespace Ryujinx.Core.OsHle.IpcServices.FspSrv
         {
             long Position = Context.Request.PtrBuff[0].Position;
 
-            string Name = ReadUtf8String(Context.Memory, Position);
+            string Name = ReadUtf8String(Context);
 
             Context.ResponseData.Write(Context.Ns.VFs.GetDrive().AvailableFreeSpace);
 
@@ -342,7 +336,7 @@ namespace Ryujinx.Core.OsHle.IpcServices.FspSrv
         {
             long Position = Context.Request.PtrBuff[0].Position;
 
-            string Name = ReadUtf8String(Context.Memory, Position);
+            string Name = ReadUtf8String(Context);
 
             Context.ResponseData.Write(Context.Ns.VFs.GetDrive().TotalSize);
 
@@ -381,13 +375,16 @@ namespace Ryujinx.Core.OsHle.IpcServices.FspSrv
             }
         }
 
-        private string ReadUtf8String(AMemory Memory, long Position)
+        private string ReadUtf8String(ServiceCtx Context, int Index = 0)
         {
+            long Position = Context.Request.PtrBuff[Index].Position;
+            long Size     = Context.Request.PtrBuff[Index].Size;
+
             using (MemoryStream MS = new MemoryStream())
             {
-                while (true)
+                while (Size-- > 0)
                 {
-                    byte Value = Memory.ReadByte(Position++);
+                    byte Value = Context.Memory.ReadByte(Position++);
 
                     if (Value == 0)
                     {
diff --git a/Ryujinx.Core/OsHle/Services/Set/ServiceSetSys.cs b/Ryujinx.Core/OsHle/Services/Set/ServiceSetSys.cs
index 68b303542..41c5d8b3b 100644
--- a/Ryujinx.Core/OsHle/Services/Set/ServiceSetSys.cs
+++ b/Ryujinx.Core/OsHle/Services/Set/ServiceSetSys.cs
@@ -22,8 +22,8 @@ namespace Ryujinx.Core.OsHle.IpcServices.Set
 
         public static long GetColorSetId(ServiceCtx Context)
         {
-            //Use white system theme
-            Context.ResponseData.Write(1);
+            Context.ResponseData.Write((int)Context.Ns.Settings.ThemeColor);
+
             return 0;
         }
 
diff --git a/Ryujinx.Core/Settings/ColorSet.cs b/Ryujinx.Core/Settings/ColorSet.cs
new file mode 100644
index 000000000..43483363f
--- /dev/null
+++ b/Ryujinx.Core/Settings/ColorSet.cs
@@ -0,0 +1,8 @@
+namespace Ryujinx.Core.Settings
+{
+    public enum ColorSet
+    {
+        BasicWhite = 0,
+        BasicBlack = 1
+    }
+}
diff --git a/Ryujinx.Core/Settings/SetSys.cs b/Ryujinx.Core/Settings/SetSys.cs
new file mode 100644
index 000000000..d8b6eb6ef
--- /dev/null
+++ b/Ryujinx.Core/Settings/SetSys.cs
@@ -0,0 +1,7 @@
+namespace Ryujinx.Core.Settings
+{
+    public class SetSys
+    {
+        public ColorSet ThemeColor;
+    }
+}
diff --git a/Ryujinx.Core/Switch.cs b/Ryujinx.Core/Switch.cs
index 0d5f8e72f..6f41da814 100644
--- a/Ryujinx.Core/Switch.cs
+++ b/Ryujinx.Core/Switch.cs
@@ -1,6 +1,7 @@
 using ChocolArm64.Memory;
 using Ryujinx.Core.Input;
 using Ryujinx.Core.OsHle;
+using Ryujinx.Core.Settings;
 using Ryujinx.Graphics.Gal;
 using Ryujinx.Graphics.Gpu;
 using System;
@@ -15,7 +16,9 @@ namespace Ryujinx.Core
         internal NsGpu     Gpu { get; private set; }
         internal Horizon   Os  { get; private set; }
         internal VirtualFs VFs { get; private set; }
-        public   Hid       Hid { get; private set; }
+
+        public Hid    Hid      { get; private set; }
+        public SetSys Settings { get; private set; }
 
         public event EventHandler Finish;
 
@@ -24,9 +27,11 @@ namespace Ryujinx.Core
             Ram = Marshal.AllocHGlobal((IntPtr)AMemoryMgr.RamSize);
 
             Gpu = new NsGpu(Renderer);
-            Os  = new Horizon(this);
             VFs = new VirtualFs();
-            Hid = new Hid(this);
+
+            Hid      = new Hid(this);
+            Os       = new Horizon(this);
+            Settings = new SetSys();
         }
 
         public void FinalizeAllProcesses()