diff --git a/src/bonsai/bonsai/bim/module/style/ui.py b/src/bonsai/bonsai/bim/module/style/ui.py
index ed1a3fdc64..4e3a1daccb 100644
--- a/src/bonsai/bonsai/bim/module/style/ui.py
+++ b/src/bonsai/bonsai/bim/module/style/ui.py
@@ -180,17 +180,26 @@ class BIM_PT_styles(Panel):
                 text=f"{self.props.reflectance_method} will be skipped: only PHYSICAL / NOTDEFINED / FLAT are supported",
                 icon="ERROR",
             )
+        elif self.props.reflectance_method in ("PHYSICAL", "NOTDEFINED"):
+            if self.props.specular_colour_class == "IfcColourRgb":
+                self.layout.label(
+                    text="Metallic color is IFC-only in PHYSICAL/NOTDEFINED and does not affect Blender appearance",
+                    icon="ERROR",
+                )
         elif self.props.reflectance_method == "FLAT":
             if self.props.diffuse_colour_class == "IfcNormalisedRatioMeasure":
                 self.layout.label(
                     text="Emissive ratio is IFC-only in FLAT Reflectance method and does not affect Blender appearance",
                     icon="ERROR",
                 )
-            if self.props.specular_colour_class == "IfcNormalisedRatioMeasure":
-                self.layout.label(
-                    text="Specular ratio is IFC-only in FLAT Reflectance method and does not affect Blender appearance",
-                    icon="ERROR",
-                )
+            self.layout.label(
+                text="Specular value is IFC-only in FLAT Reflectance method and does not affect Blender appearance",
+                icon="ERROR",
+            )
+            self.layout.label(
+                text="Highlight value is IFC-only in FLAT Reflectance method and does not affect Blender appearance",
+                icon="ERROR",
+            )
 
         row = self.layout.row(align=True)
         row.label(text="Emissive" if self.props.reflectance_method == "FLAT" else "Diffuse")