diff --git a/src/icesat2waves/config/generate_colors.py b/src/icesat2waves/config/generate_colors.py
index 0eb653d..b8b5f45 100644
--- a/src/icesat2waves/config/generate_colors.py
+++ b/src/icesat2waves/config/generate_colors.py
@@ -1,6 +1,10 @@
 #%matplotlib inline
+import logging
+
 from icesat2waves.local_modules import m_colormanager_ph3 as M_color
 
+_logger = logging.getLogger(__name__)
+
 mconfig['paths']
 path=mconfig['paths']['config']
 A = M_color.ase_to_json(path+'color_def.ase')
@@ -8,7 +12,7 @@
 B=dict()
 for i in A[0]['swatches']:
     B[i['name']] = i['data']['values']
-    print(i['name'] + '  ' + str(i['data']['values']))
+    _logger.debug("swatch name: %s, values: %s", i['name'], i['data']['values'])
 
 rels=dict()
 
diff --git a/src/icesat2waves/config/startup.py b/src/icesat2waves/config/startup.py
index 60564f1..dd7415e 100644
--- a/src/icesat2waves/config/startup.py
+++ b/src/icesat2waves/config/startup.py
@@ -1,3 +1,4 @@
+import logging
 import os
 import pathlib
 import string
@@ -7,6 +8,8 @@
 from icesat2waves.local_modules import m_colormanager_ph3 as M_color
 from icesat2waves.local_modules import m_tools_ph3 as MT
 
+_logger = logging.getLogger(__name__)
+
 ## Read folders and configuration paths
 config_dir_path = os.path.dirname(__file__)
 mconfig=MT.json_load('config',config_dir_path)