diff --git a/Makefile b/Makefile
index 75dbd77..1660906 100644
--- a/Makefile
+++ b/Makefile
@@ -21,7 +21,7 @@ package:
 	rm -rf build
 	python setup.py sdist bdist_wheel
 
-VERSION = 1.2.3.2
+VERSION = 1.2.3.3
 upload:
 	python -m twine upload  dist/cnstd-$(VERSION)* --verbose
 
diff --git a/RELEASE.md b/RELEASE.md
index 9f2787f..3f12dff 100644
--- a/RELEASE.md
+++ b/RELEASE.md
@@ -1,5 +1,11 @@
 # Release Notes
 
+# Update 2023.09.21：发布 V1.2.3.3
+
+主要变更：
+* 画图颜色优先使用固定的颜色组。
+* 下载模型时支持设定环境变量 `HF_TOKEN`，以便从private repos中下载模型。
+
 # Update 2023.07.02：发布 V1.2.3.2
 
 主要变更：
diff --git a/cnstd/__version__.py b/cnstd/__version__.py
index 06b0f29..0e8239e 100644
--- a/cnstd/__version__.py
+++ b/cnstd/__version__.py
@@ -17,4 +17,4 @@
 # specific language governing permissions and limitations
 # under the License.
 
-__version__ = '1.2.3.2'
+__version__ = '1.2.3.3'
diff --git a/cnstd/utils/utils.py b/cnstd/utils/utils.py
index f202b7c..05fd9e5 100644
--- a/cnstd/utils/utils.py
+++ b/cnstd/utils/utils.py
@@ -170,6 +170,7 @@ def download(url, path=None, overwrite=False, sha1_hash=None):
             os.makedirs(dirname)
 
         logger.info('Downloading %s from %s...' % (fname, url))
+        HF_TOKEN = os.environ.get('HF_TOKEN')
         with tempfile.TemporaryDirectory() as tmp_dir:
             local_path = hf_hub_download(
                 repo_id=url["repo_id"],
@@ -177,6 +178,7 @@ def download(url, path=None, overwrite=False, sha1_hash=None):
                 filename=url["filename"],
                 repo_type="model",
                 cache_dir=tmp_dir,
+                token=HF_TOKEN,
             )
             shutil.copy2(local_path, fname)
 
diff --git a/cnstd/yolov7/common.py b/cnstd/yolov7/common.py
index 8c94a6d..10ae0c8 100644
--- a/cnstd/yolov7/common.py
+++ b/cnstd/yolov7/common.py
@@ -604,8 +604,7 @@ def fuse_conv_bn(self, conv, bn):
     def fuse_repvgg_block(self):    
         if self.deploy:
             return
-        print(f"RepConv.fuse_repvgg_block")
-                
+
         self.rbr_dense = self.fuse_conv_bn(self.rbr_dense[0], self.rbr_dense[1])
         
         self.rbr_1x1 = self.fuse_conv_bn(self.rbr_1x1[0], self.rbr_1x1[1])
diff --git a/cnstd/yolov7/layout_analyzer.py b/cnstd/yolov7/layout_analyzer.py
index 5836173..f687252 100644
--- a/cnstd/yolov7/layout_analyzer.py
+++ b/cnstd/yolov7/layout_analyzer.py
@@ -148,7 +148,7 @@ def __init__(
             device (str): 'cpu', or 'gpu'; default: 'cpu'
             **kwargs ():
         """
-        assert model_name in ('layout', 'mfd')
+        assert model_name in CATEGORY_DICT.keys()
         model_backend = model_backend.lower()
         assert model_backend in ('pytorch', 'onnx')
         self._model_name = model_name
@@ -356,12 +356,30 @@ def save_img(self, img0, one_out, save_path):
         save_layout_img(img0, self.categories, one_out, save_path)
 
 
+COLOR_LIST = [
+    [0, 140, 255],  # 深橙色
+    [127, 255, 0],  # 春绿色
+    [255, 144, 30],  # 道奇蓝
+    [180, 105, 255],  # 粉红色
+    [128, 0, 128],  # 紫色
+    [0, 255, 255],  # 黄色
+    [255, 191, 0],  # 深天蓝色
+    [50, 205, 50],  # 石灰绿色
+    [60, 20, 220],  # 猩红色
+    [130, 0, 75]  # 靛蓝色
+]
+
+
 def save_layout_img(img0, categories, one_out, save_path):
     """可视化版面分析结果。"""
     if isinstance(img0, Image.Image):
         img0 = cv2.cvtColor(np.asarray(img0.convert('RGB')), cv2.COLOR_RGB2BGR)
 
-    colors = [[random.randint(0, 255) for _ in range(3)] for _ in categories]
+    if len(categories) > 10:
+        colors = [[random.randint(0, 255) for _ in range(3)] for _ in categories]
+    else:
+        colors = COLOR_LIST
+
     for one_box in one_out:
         _type = one_box['type']
         conf = one_box['score']