diff --git a/src/html_epub_preprocessor.py b/src/html_epub_preprocessor.py
index 0002c8e..6915b41 100644
--- a/src/html_epub_preprocessor.py
+++ b/src/html_epub_preprocessor.py
@@ -346,7 +346,10 @@ def get_tags_between_chapter_marks(first_id, href, html_soup):
         next_tag = marked_tags.next_sibling
         tags = []
         while next_tag:
-            if next_tag.attrs.get('class') == 'converter-chapter-mark':
+            # TODO: why we hve there NavString
+
+            if not isinstance(next_tag, NavigableString) and\
+                    (next_tag.attrs.get('class') == 'converter-chapter-mark'):
                 break
             tags.append(next_tag)
             next_tag = next_tag.next_sibling
diff --git a/src/livecarta_config.py b/src/livecarta_config.py
index 31acc5e..8e12b9d 100644
--- a/src/livecarta_config.py
+++ b/src/livecarta_config.py
@@ -103,9 +103,9 @@ class LawCartaConfig:
         'olive': 'darkGreen',
         'silver': 'lightGray',
         'white': 'white',
-        'maroon': '#800000',
-        'gray': '#808080',
-        'grey': '#808080'
+        'maroon': 'darkRed',  # '#800000',
+        'gray': 'darkGray',
+        'grey': 'darkGray',
     }
     INDENT = '30px'
 
diff --git a/src/util/color_reader.py b/src/util/color_reader.py
index 812577e..fddab09 100644
--- a/src/util/color_reader.py
+++ b/src/util/color_reader.py
@@ -62,7 +62,7 @@ def str2color_name(s: str):
         if s in ['#FFD472', '#F47B4D', '#FFFBEF', '#F47B4D']:
             return 'olive'
         if s in ['#B0DFD7', '#EFF8F6', '#5CC4B7']:
-            return 'teal2'
+            return 'teal'
         name = get_hex_color_name(s)
         if (name == 'white') and (s.lower() not in ['#ffffff', '#fff']):
             name = 'gray'