diff --git a/org-roam-graph.el b/org-roam-graph.el
index 9a1cd74..75d93fc 100644
--- a/org-roam-graph.el
+++ b/org-roam-graph.el
@@ -65,14 +65,20 @@ Example:
   :type '(alist)
   :group 'org-roam)
 
-(defcustom org-roam-graph-node-extra-config nil
+(defcustom org-roam-graph-node-extra-config
+  '(("shape"      . "underline")
+    ("style"      . "rounded,filled")
+    ("fillcolor"  . "#EEEEEE")
+    ("color"      . "#C9C9C9")
+    ("fontcolor"  . "#111111"))
   "Extra options for graphviz nodes.
 Example:
  '((\"color\" . \"skyblue\"))"
   :type '(alist)
   :group 'org-roam)
 
-(defcustom org-roam-graph-edge-extra-config nil
+(defcustom org-roam-graph-edge-extra-config
+  '(("color" . "#333333"))
   "Extra options for graphviz edges.
 Example:
  '((\"dir\" . \"back\"))"