adds option to color attribute to override the attribute

src/properties/bake_to_id.py

@@ -29,6 +29,11 @@ class BakeToIDProperties(PropertyGroup):
         name="Color Attribute",
         default="ID_MASK",
     )
+    target_vertex_color_override_attribute: BoolProperty(
+        name="Override Color Attribute",
+        default=True,
+        description="If set true, the attribute will be deleted and recreated, if it already exists. If set false, the data will just be overwritten."
+    )
 
     adv_total_hues: IntProperty(
         name="Total Hues",

src/types/targets/vertex_colors.py

@@ -3,7 +3,8 @@ name = 'Color Attribute / Vertex Color'
 description = 'Bakes the ID onto a color attribute (previously known as Vertex Color)'
 
 connected_properties = [
-    'target_vertex_color_attribute_name'
+    'target_vertex_color_attribute_name',
+    'target_vertex_color_override_attribute'
 ]
 
 
@@ -21,12 +22,22 @@ def paint_targets(props, targets, colors):
 
     layer_name = props.target_vertex_color_attribute_name
     for mesh in sorted_targets:
+
         if layer_name in mesh.attributes:
             mesh.attributes.remove(mesh.attributes[layer_name])
 
-        color_attribute = mesh.attributes.new(name=layer_name, type='FLOAT_COLOR', domain='CORNER')
+        color_attribute = get_color_attribute(props, mesh.attributes, layer_name)
 
         for (indecies, color) in sorted_targets[mesh]:
             for polygon in indecies:
                 for idx in polygon.loop_indices:
                     color_attribute.data[idx].color = (color[0], color[1], color[2], 1.0)
+
+def get_color_attribute(props, attributes, layer_name):
+    if layer_name in attributes:
+        if not props.target_vertex_color_override_attribute:
+            return attributes[layer_name]
+
+        attributes.remove(attributes[layer_name])
+
+    return attributes.new(name=layer_name, type='FLOAT_COLOR', domain='CORNER')