From 90cada307615bba1572f56105405023871635a11 Mon Sep 17 00:00:00 2001
From: AsaNehm <101250148+AsaNehm@users.noreply.github.com>
Date: Tue, 7 Oct 2025 12:37:04 +0200
Subject: [PATCH] Off-white background implementation (ROOT)

To allow for seamless plots on the updated DUNE slides template, this adds the option to change the background color of plots to the same off-white (#f0f0f0) color.

Function is called off_white.bkg and would be called like the other dunestyle functions
---
 src/root/cpp/include/DUNEStyle.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/root/cpp/include/DUNEStyle.h b/src/root/cpp/include/DUNEStyle.h
index 430afa9..0e2f1db 100644
--- a/src/root/cpp/include/DUNEStyle.h
+++ b/src/root/cpp/include/DUNEStyle.h
@@ -418,7 +418,17 @@ namespace dunestyle
 
     return ret;
   }
+  // ----------------------------------------------------------------------------
+
+  /// Change the background color to an off-white color (#f0f0f0) for use on updated DUNE slide (new template)
 
+  void Off_white_bkg()
+  {
+    static const TColor __off_white(TColor::GetFreeColorIndex(), 0.94, 0.94, 0.94);
+    gStyle->SetCanvasColor(__off_white);
+    gStyle->SetTitleFillColor(__off_white);
+    gStyle->SetStatColor(__off_white);
+  }
   // ----------------------------------------------------------------------------
   // ----------------------------------------------------------------------------