diff --git a/3rdparty/imnodes/imnodes.cpp b/3rdparty/imnodes/imnodes.cpp
index c9c1638..9e208bb 100644
--- a/3rdparty/imnodes/imnodes.cpp
+++ b/3rdparty/imnodes/imnodes.cpp
@@ -859,6 +859,11 @@ bool ShouldLinkSnapToPin(
         return false;
     }
 
+    if (start_pin.Shape != end_pin.Shape)
+    {
+        return false;
+    }
+
     // The link to be created must not be a duplicate, unless it is the link which was created on
     // snap. In that case we want to snap, since we want it to appear visually as if the created
     // link remains snapped to the pin.
@@ -1573,6 +1578,8 @@ void BeginPinAttribute(
     const int                  id,
     const ImNodesAttributeType type,
     const ImNodesPinShape      shape,
+    const ImU32                color_background,
+    const ImU32                color_hovered,
     const int                  node_idx)
 {
     // Make sure to call BeginNode() before calling
@@ -1595,8 +1602,8 @@ void BeginPinAttribute(
     pin.Type = type;
     pin.Shape = shape;
     pin.Flags = GImNodes->CurrentAttributeFlags;
-    pin.ColorStyle.Background = GImNodes->Style.Colors[ImNodesCol_Pin];
-    pin.ColorStyle.Hovered = GImNodes->Style.Colors[ImNodesCol_PinHovered];
+    pin.ColorStyle.Background = color_background;
+    pin.ColorStyle.Hovered = color_hovered;
 }
 
 void EndPinAttribute()
@@ -1877,7 +1884,7 @@ static void MiniMapUpdate()
         editor.Panning = ImFloor(center - target);
     }
 
-    // Reset callback info after use
+    // reset callback info after use
     editor.MiniMapNodeHoveringCallback = NULL;
     editor.MiniMapNodeHoveringCallbackUserData = NULL;
 }
@@ -2125,7 +2132,7 @@ void BeginNodeEditor()
     assert(GImNodes->CurrentScope == ImNodesScope_None);
     GImNodes->CurrentScope = ImNodesScope_Editor;
 
-    // Reset state from previous pass
+    // reset state from previous pass
 
     ImNodesEditorContext& editor = EditorContextGet();
     editor.AutoPanningDelta = ImVec2(0, 0);
@@ -2458,16 +2465,16 @@ void EndNodeTitleBar()
     ImGui::SetCursorPos(GridSpaceToEditorSpace(editor, GetNodeContentOrigin(node)));
 }
 
-void BeginInputAttribute(const int id, const ImNodesPinShape shape)
+void BeginInputAttribute(const int id, const ImNodesPinShape shape, ImU32 color_background, ImU32 color_hovered)
 {
-    BeginPinAttribute(id, ImNodesAttributeType_Input, shape, GImNodes->CurrentNodeIdx);
+    BeginPinAttribute(id, ImNodesAttributeType_Input, shape, color_background, color_hovered, GImNodes->CurrentNodeIdx);
 }
 
 void EndInputAttribute() { EndPinAttribute(); }
 
-void BeginOutputAttribute(const int id, const ImNodesPinShape shape)
+void BeginOutputAttribute(const int id, const ImNodesPinShape shape, ImU32 color_background, ImU32 color_hovered)
 {
-    BeginPinAttribute(id, ImNodesAttributeType_Output, shape, GImNodes->CurrentNodeIdx);
+    BeginPinAttribute(id, ImNodesAttributeType_Output, shape, color_background, color_hovered, GImNodes->CurrentNodeIdx);
 }
 
 void EndOutputAttribute() { EndPinAttribute(); }
diff --git a/3rdparty/imnodes/imnodes.h b/3rdparty/imnodes/imnodes.h
index b4fe93a..d0a4ea0 100644
--- a/3rdparty/imnodes/imnodes.h
+++ b/3rdparty/imnodes/imnodes.h
@@ -288,10 +288,10 @@ void EndNodeTitleBar();
 // Each attribute id must be unique.
 
 // Create an input attribute block. The pin is rendered on left side.
-void BeginInputAttribute(int id, ImNodesPinShape shape = ImNodesPinShape_CircleFilled);
+void BeginInputAttribute(int id, ImNodesPinShape shape = ImNodesPinShape_CircleFilled, ImU32 color_background = IM_COL32(53, 150, 250, 180), ImU32 color_hovered = IM_COL32(53, 150, 250, 255));
 void EndInputAttribute();
 // Create an output attribute block. The pin is rendered on the right side.
-void BeginOutputAttribute(int id, ImNodesPinShape shape = ImNodesPinShape_CircleFilled);
+void BeginOutputAttribute(int id, ImNodesPinShape shape = ImNodesPinShape_CircleFilled, ImU32 color_background = IM_COL32(53, 150, 250, 180), ImU32 color_hovered = IM_COL32(53, 150, 250, 255));
 void EndOutputAttribute();
 // Create a static attribute block. A static attribute has no pin, and therefore can't be linked to
 // anything. However, you can still use IsAttributeActive() and IsAnyAttributeActive() to check for