diff --git a/pyiron_workflow/nodes/composite.py b/pyiron_workflow/nodes/composite.py
index 075681e3..b513e20a 100644
--- a/pyiron_workflow/nodes/composite.py
+++ b/pyiron_workflow/nodes/composite.py
@@ -423,6 +423,12 @@ def color(self) -> str:
         """For drawing the graph"""
         return SeabornColors.brown
 
+    @property
+    def gui_color(self) -> str:
+        """For nodes in the gui, pyiron-xyflow in reactflow.py"""
+        color_light_orange = "#eacf9f"
+        return color_light_orange
+
     @property
     def graph_as_dict(self) -> dict:
         """
diff --git a/pyiron_workflow/nodes/function.py b/pyiron_workflow/nodes/function.py
index a3653147..a58c3d0e 100644
--- a/pyiron_workflow/nodes/function.py
+++ b/pyiron_workflow/nodes/function.py
@@ -343,6 +343,12 @@ def color(self) -> str:
         """For drawing the graph"""
         return SeabornColors.green
 
+    @property
+    def gui_color(self) -> str:
+        """For nodes in the gui, pyiron-xyflow in reactflow.py"""
+        color_light_green = "#a2ea9f"
+        return color_light_green
+
     @classmethod
     def _extra_info(cls) -> str:
         return getsource(cls.node_function)
diff --git a/pyiron_workflow/nodes/transform.py b/pyiron_workflow/nodes/transform.py
index 7c8701bd..179cade9 100644
--- a/pyiron_workflow/nodes/transform.py
+++ b/pyiron_workflow/nodes/transform.py
@@ -29,6 +29,12 @@ def color(self) -> str:
         """For drawing the graph"""
         return SeabornColors.blue
 
+    @property
+    def gui_color(self) -> str:
+        """For nodes in the gui, pyiron-xyflow in reactflow.py"""
+        color_light_purple = "#cb9fea"
+        return color_light_purple
+
 
 class FromManyInputs(Transformer, ABC):
     _output_name: ClassVar[str]  # Mandatory attribute for non-abstract subclasses