Utility to quickly set object colours, also colour mode is automatically changed now

src/ifcblenderexport/blenderbim/bim/__init__.py

@@ -179,6 +179,7 @@ if bpy is not None:
         operator.CalculateFaceAreas,
         operator.CalculateObjectVolumes,
         operator.AddOpening,
+        operator.SetOverrideColour,
         prop.StrProperty,
         prop.Variable,
         prop.Role,
@@ -255,6 +256,7 @@ if bpy is not None:
         ui.BIM_PT_text,
         ui.BIM_PT_modeling_utilities,
         ui.BIM_PT_qto_utilities,
+        ui.BIM_PT_misc_utilities,
         ui.BIM_UL_generic,
         ui.BIM_UL_clash_sets,
         ui.BIM_UL_constraints,

src/ifcblenderexport/blenderbim/bim/operator.py

@@ -268,6 +268,8 @@ class ColourByClass(bpy.types.Operator):
             if ifc_class not in ifc_classes:
                 ifc_classes[ifc_class] = next(colours)
             obj.color = ifc_classes[ifc_class]
+        area = next(area for area in bpy.context.screen.areas if area.type == 'VIEW_3D')
+        area.spaces[0].shading.color_type = 'OBJECT'
         return {'FINISHED'}
 
 
@@ -287,6 +289,8 @@ class ColourByAttribute(bpy.types.Operator):
             if value not in values:
                 values[value] = next(colours)
             obj.color = values[value]
+        area = next(area for area in bpy.context.screen.areas if area.type == 'VIEW_3D')
+        area.spaces[0].shading.color_type = 'OBJECT'
         return {'FINISHED'}
 
 
@@ -310,6 +314,8 @@ class ColourByPset(bpy.types.Operator):
             if value not in values:
                 values[value] = next(colours)
             obj.color = values[value]
+        area = next(area for area in bpy.context.screen.areas if area.type == 'VIEW_3D')
+        area.spaces[0].shading.color_type = 'OBJECT'
         return {'FINISHED'}
 
 
@@ -1392,6 +1398,8 @@ class VisualiseDiff(bpy.types.Operator):
                 obj.color = (0., 1., 0., .2)
             elif global_id.string_value in diff['changed']:
                 obj.color = (0., 0., 1., .2)
+        area = next(area for area in bpy.context.screen.areas if area.type == 'VIEW_3D')
+        area.spaces[0].shading.color_type = 'OBJECT'
         return {'FINISHED'}
 
 
@@ -3435,3 +3443,16 @@ class AddOpening(bpy.types.Operator):
         modifier.operation = 'DIFFERENCE'
         modifier.object = opening
         return {'FINISHED'}
+
+
+class SetOverrideColour(bpy.types.Operator):
+    bl_idname = 'bim.set_override_colour'
+    bl_label = 'Set Override Colour'
+
+    def execute(self, context):
+        result = 0
+        for obj in bpy.context.selected_objects:
+            obj.color = bpy.context.scene.BIMProperties.override_colour
+        area = next(area for area in bpy.context.screen.areas if area.type == 'VIEW_3D')
+        area.spaces[0].shading.color_type = 'OBJECT'
+        return {'FINISHED'}

src/ifcblenderexport/blenderbim/bim/prop.py

@@ -1099,6 +1099,7 @@ class BIMProperties(PropertyGroup):
     qto_result: StringProperty(default='', name='Qto Result')
     area_unit: StringProperty(default='', name='IFC Area Unit')
     volume_unit: StringProperty(default='', name='IFC Volume Unit')
+    override_colour: FloatVectorProperty(name='Override Colour', subtype='COLOR', default=(1, 0, 0, 1), min=0.0, max=1.0, size=4)
 
 
 class BCFProperties(PropertyGroup):

src/ifcblenderexport/blenderbim/bim/ui.py

@@ -1866,6 +1866,23 @@ class BIM_PT_qto_utilities(Panel):
         row.operator("bim.calculate_object_volumes")
 
 
+class BIM_PT_misc_utilities(Panel):
+    bl_idname = "BIM_PT_misc_utilities"
+    bl_label = "Miscellaneous"
+    bl_space_type = 'VIEW_3D'
+    bl_region_type = "UI"
+    bl_category = 'BlenderBIM'
+
+    def draw(self, context):
+        layout = self.layout
+        props = context.scene.BIMProperties
+
+        row = layout.row()
+        row.prop(props, 'override_colour', text='')
+        row = layout.row(align=True)
+        row.operator("bim.set_override_colour")
+
+
 def ifc_units(self, context):
     scene = context.scene
     props = context.scene.BIMProperties