diff --git a/API_Reference/API_Reference.py b/API_Reference/API_Reference.py
index 4be0fd8..27175ac 100644
--- a/API_Reference/API_Reference.py
+++ b/API_Reference/API_Reference.py
@@ -470,6 +470,8 @@ guan.combine_four_images(image_path_array, figsize=(16,16), show=0, save=1, file
 # 制作GIF动画
 guan.make_gif(image_path_array, filename='a', duration=0.1)
 
+# 选取颜色
+color_array = guan.color_matplotlib()
 
 
 # Module 12: data processing
diff --git a/Source_Code/PyPI/setup.cfg b/Source_Code/PyPI/setup.cfg
index 000152a..b6ed955 100644
--- a/Source_Code/PyPI/setup.cfg
+++ b/Source_Code/PyPI/setup.cfg
@@ -1,7 +1,7 @@
 [metadata]
 # replace with your username:
 name = guan
-version = 0.0.172
+version = 0.0.173
 author = guanjihuan
 author_email = guanjihuan@163.com
 description = An open source python package
diff --git a/Source_Code/PyPI/src/guan.egg-info/PKG-INFO b/Source_Code/PyPI/src/guan.egg-info/PKG-INFO
index 17e022c..b0e59ed 100644
--- a/Source_Code/PyPI/src/guan.egg-info/PKG-INFO
+++ b/Source_Code/PyPI/src/guan.egg-info/PKG-INFO
@@ -1,6 +1,6 @@
 Metadata-Version: 2.1
 Name: guan
-Version: 0.0.172
+Version: 0.0.173
 Summary: An open source python package
 Home-page: https://py.guanjihuan.com
 Author: guanjihuan
diff --git a/Source_Code/PyPI/src/guan/__init__.py b/Source_Code/PyPI/src/guan/__init__.py
index 9f915cc..d85b778 100644
--- a/Source_Code/PyPI/src/guan/__init__.py
+++ b/Source_Code/PyPI/src/guan/__init__.py
@@ -2,7 +2,7 @@
 
 # With this package, you can calculate band structures, density of states, quantum transport and topological invariant of tight-binding models by invoking the functions you need. Other frequently used functions are also integrated in this package, such as file reading/writing, figure plotting, data processing.
 
-# The current version is guan-0.0.172, updated on July 02, 2023.
+# The current version is guan-0.0.173, updated on July 12, 2023.
 
 # Installation: pip install --upgrade guan
 
@@ -2781,8 +2781,10 @@ def make_gif(image_path_array, filename='a', duration=0.1):
     imageio.mimsave(filename+'.gif', images, 'GIF', duration=duration)
 
 
-
-
+# 选取颜色
+def color_matplotlib():
+    color_array = ['tab:blue', 'tab:orange', 'tab:green', 'tab:red', 'tab:purple', 'tab:brown', 'tab:pink', 'tab:gray', 'tab:olive', 'tab:cyan']
+    return color_array