diff --git a/mkdocs_macros/context.py b/mkdocs_macros/context.py
index e5cec0c..e5596c5 100644
--- a/mkdocs_macros/context.py
+++ b/mkdocs_macros/context.py
@@ -107,12 +107,13 @@ def format_value(value):
         return repr(value)
 
 
-def make_html(rows, header=[], tb_class='pretty'):
+def make_html(rows, header=[], tb_class='macros-tb'):
     "Produce an HTML table"
+    font_color = "#000000"  # black
     back_color = "#F0FFFF"  # light blue
     grid_color = "#DCDCDC"
     padding = "5px"
-    style = "border:1px solid %s; padding: %s" % (grid_color, padding)
+    style = f"color:{font_color}; border:1px solid {grid_color}; padding: {padding}"
     templ = Template("""
 <table class="{{ tb_class }}" style="background-color: {{ back_color}}; {{ style }}">
     {% for item in header %}
diff --git a/setup.py b/setup.py
index 2b109a5..bb664c4 100644
--- a/setup.py
+++ b/setup.py
@@ -12,7 +12,7 @@
 # Initialization
 # --------------------
 
-VERSION_NUMBER = '1.0.2'
+VERSION_NUMBER = '1.0.3'
 
 # required if you want to run document/test
 # pip install 'mkdocs-macros-plugin[test]'
diff --git a/test/module/mkdocs.yml b/test/module/mkdocs.yml
index a68ca5e..f50a2ee 100644
--- a/test/module/mkdocs.yml
+++ b/test/module/mkdocs.yml
@@ -1,5 +1,8 @@
 site_name: Main test site
-theme: material
+theme: 
+    name: material
+    palette:
+        scheme: slate
 copyright: (C) Laurent Franceschetti 2020
 
 nav: