diff --git a/autodoc/doc_state.py b/autodoc/doc_state.py
index 4ddd47b..6c2a09d 100644
--- a/autodoc/doc_state.py
+++ b/autodoc/doc_state.py
@@ -596,7 +596,7 @@ def __simple_ds__(label, obj, edges):
     bordercolor = "#00aaff"
     style = "penwidth=2"
     if cls == "GAMDataSource":
-        fillcolor = "#eee"
+        fillcolor = "#eeeeee"
     node = f"{id}[label=<<B>{label}</B><BR/>{cls}>, "
     node += f'{style}, fillcolor="{fillcolor}", color="{bordercolor}"]\n'
     if thread and not multi_thread: