glTF exporter: fix additional Vertex Color normalization

io_scene_gltf2/__init__.py

@@ -4,7 +4,7 @@
 bl_info = {
     'name': 'glTF 2.0 format',
     'author': 'Julien Duroure, Scurest, Norbert Nopper, Urs Hanselmann, Moritz Becher, Benjamin Schmithüsen, Jim Eckerlein, and many external contributors',
-    "version": (3, 4, 35),
+    "version": (3, 4, 36),
     'blender': (3, 3, 0),
     'location': 'File > Import-Export',
     'description': 'Import-Export as glTF 2.0',

io_scene_gltf2/blender/exp/gltf2_blender_gather_primitive_attributes.py

@@ -148,7 +148,7 @@ def __gather_attribute(blender_primitive, attribute, export_settings):
         "POSITION": True
     }
 
-    if (attribute.startswith("_COLOR") or attribute.startswith("COLOR_")) and blender_primitive["attributes"][attribute]['component_type'] == gltf2_io_constants.ComponentType.UnsignedShort:
+    if (attribute.startswith("_") or attribute.startswith("COLOR_")) and blender_primitive["attributes"][attribute]['component_type'] == gltf2_io_constants.ComponentType.UnsignedShort:
         # Byte Color vertex color, need to normalize
 
         data['data'] *= 65535