ModManager. detour fully works

About/About.xml

@@ -3,6 +3,6 @@
 		<name>[XND] Visible Pants</name>
 		<author>XeoNovaDan</author>
 		<url>https://ludeon.com/forums/index.php?topic=29503.0</url>
-		<targetVersion>0.19.0</targetVersion>
+		<targetVersion>0.19.2009</targetVersion>
 		<description>A mod that allows you to see everybody's trousers - for that complete feel. Taken from Vindar's Medieval Times mod with permission.</description>
 </ModMetaData>

About/Manifest.xml

@@ -0,0 +1,6 @@
+<Manifest>
+    <identifier>VisiblePants</identifier>
+    <version>2.1</version>
+    <manifestUri>https://rawgit.com/XeoNovaDan/VisiblePants/master/About/Manifest.xml</manifestUri>
+    <downloadUri>https://github.com/XeoNovaDan/VisiblePants/releases</downloadUri>
+</Manifest>

Source/VisiblePants/HarmonyPatches.cs

@@ -1,6 +1,9 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Reflection;
+using System.Reflection.Emit;
+using System.Runtime.CompilerServices;
 using System.Text;
 using UnityEngine;
 using Verse;
@@ -20,16 +23,20 @@ static HarmonyPatches()
             HarmonyInstance h = HarmonyInstance.Create("XeoNovaDan.VisiblePants");
 
             h.Patch(AccessTools.Method(typeof(Pawn_ApparelTracker), "SortWornApparelIntoDrawOrder"),
-                new HarmonyMethod(patchType, nameof(Prefix_SortWornApparelIntoDrawOrder)));
+                new HarmonyMethod(patchType, nameof(Detour_SortWornApparelIntoDrawOrder)));
         }
 
-        public static bool Prefix_SortWornApparelIntoDrawOrder(Pawn_ApparelTracker __instance, ref ThingOwner<Apparel> ___wornApparel)
+        public static bool Detour_SortWornApparelIntoDrawOrder(Pawn_ApparelTracker __instance, ref ThingOwner<Apparel> ___wornApparel)
         {
-            ___wornApparel.InnerListForReading.Sort((Apparel a, Apparel b) => (a.IsPants() ? 99 : a.def.apparel.LastLayer.drawOrder).CompareTo(b.def.apparel.LastLayer.drawOrder));
+            ___wornApparel.InnerListForReading.Sort((Apparel a, Apparel b) => AdjustedDrawOrder(a.def).CompareTo(AdjustedDrawOrder(b.def)));
             return false;
         }
 
-        private static bool IsPants(this Apparel a) => a.def == VP_ThingDefOf.Apparel_Pants || a.def == VP_ThingDefOf.Apparel_FlakPants;
+        private static int AdjustedDrawOrder(ThingDef apparel) =>
+            apparel.apparel.LastLayer.drawOrder + ((apparel.IsPants()) ? 99 : 0);
+
+        private static bool IsPants(this ThingDef apparel) =>
+            apparel == VP_ThingDefOf.Apparel_Pants || apparel == VP_ThingDefOf.Apparel_FlakPants;
 
     }
 }

Source/VisiblePants/Properties/AssemblyInfo.cs

@@ -32,5 +32,5 @@
 // You can specify all the values or you can default the Build and Revision Numbers
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyVersion("2.1.0.0")]
 [assembly: AssemblyFileVersion("1.0.0.0")]