diff --git a/Assets/Misc/ChangeLog.txt b/Assets/Misc/ChangeLog.txt
index c03a4ca..ccdb45d 100644
--- a/Assets/Misc/ChangeLog.txt
+++ b/Assets/Misc/ChangeLog.txt
@@ -1,6 +1,7 @@
 0.5.3
 
-- 加入对于未知颜色的 Arc 的支持
+- 支持用颜色为 3 的直角 Arc 模拟可变尺寸的 Arctap
+- 支持未知颜色的 Arc
 - 修复特定情况下打击特效会渲染在 ArcTap 之后的问题
 - 修复 NoInput 下 Arc 开头的渲染位置
 - 修复负数 BPM 下 Arc 的渲染
diff --git a/Assets/Scripts/Gameplay/Chart/ArcChart.cs b/Assets/Scripts/Gameplay/Chart/ArcChart.cs
index 4eac334..9eed8c7 100644
--- a/Assets/Scripts/Gameplay/Chart/ArcChart.cs
+++ b/Assets/Scripts/Gameplay/Chart/ArcChart.cs
@@ -905,6 +905,8 @@ public void Instantiate(ArcArc arc)
 				arc.IsSfx ? ArcArcManager.Instance.SfxArcTapPrefab : ArcArcManager.Instance.ArcTapPrefab, arc.transform
 			);
 
+			ShadowRenderer.sprite=ArcArcManager.Instance.ArcTapShadowSkin;
+
 			UpdatePosition();
 			UpdateScale();
 			SetupArcTapConnection();
diff --git a/Assets/Scripts/Gameplay/Managers/ArcArcManager.cs b/Assets/Scripts/Gameplay/Managers/ArcArcManager.cs
index 0d82d8a..83ec4e5 100644
--- a/Assets/Scripts/Gameplay/Managers/ArcArcManager.cs
+++ b/Assets/Scripts/Gameplay/Managers/ArcArcManager.cs
@@ -19,6 +19,7 @@ private void Awake()
 		public GameObject ArcNotePrefab, ArcTapPrefab, SfxArcTapPrefab, ConnectionPrefab;
 		public Transform ArcLayer;
 		public Color ConnectionColor;
+		public Sprite ArcTapShadowSkin;
 		public Texture2D ArcTapSkin;
 		public Material ArcTapMaterial;
 		public Texture2D SfxArcTapNoteSkin;
@@ -157,10 +158,12 @@ private void RenderArcs()
 
 			foreach (var t in Arcs)
 			{
-				foreach(var arctap in t.ArcTaps){
+				foreach (var arctap in t.ArcTaps)
+				{
 					RenderArcTap(arctap);
 				}
-				if (t.ConvertedVariousSizedArctap!=null){
+				if (t.ConvertedVariousSizedArctap != null)
+				{
 					RenderArcTap(t.ConvertedVariousSizedArctap);
 				}
 				int duration = t.EndTiming - t.Timing;
@@ -257,10 +260,12 @@ private void JudgeArcs()
 				{
 					continue;
 				}
-				foreach(var arcTap in arc.ArcTaps){
+				foreach (var arcTap in arc.ArcTaps)
+				{
 					JudgeArcTap(arcTap);
 				}
-				if(arc.ConvertedVariousSizedArctap!=null){
+				if (arc.ConvertedVariousSizedArctap != null)
+				{
 					JudgeArcTap(arc.ConvertedVariousSizedArctap);
 				}
 				if (arc.Judged) continue;
@@ -304,13 +309,19 @@ private void JudgeArcTap(ArcArcTap t)
 
 		public void SetArcTapShadowSkin(Sprite sprite)
 		{
+			ArcTapShadowSkin = sprite;
 			ArcTapPrefab.GetComponentInChildren<SpriteRenderer>().sprite = sprite;
+			SfxArcTapPrefab.GetComponentInChildren<SpriteRenderer>().sprite = sprite;
 			foreach (ArcArc arc in Arcs)
 			{
 				foreach (ArcArcTap t in arc.ArcTaps)
 				{
 					t.ShadowRenderer.sprite = sprite;
 				}
+				if (arc.ConvertedVariousSizedArctap != null)
+				{
+					arc.ConvertedVariousSizedArctap.ShadowRenderer.sprite = sprite;
+				}
 			}
 		}