diff --git a/libpdf/parameters.py b/libpdf/parameters.py
index 70d0640..02d6cab 100644
--- a/libpdf/parameters.py
+++ b/libpdf/parameters.py
@@ -202,7 +202,7 @@
     'paragraph': COLORS['blue'] + (40,),
     'table': COLORS['red'] + (40,),
     'figure': COLORS['yellow'] + (80,),
-    'rect': COLORS['cyan'] + (40,),
+    'rect': COLORS['cyan'] + (160,),
 }
 
 RENDER_ELEMENTS = [