diff --git a/common_resources/src/document_setup.tex b/common_resources/src/document_setup.tex
index 274b7f6..137c56f 100644
--- a/common_resources/src/document_setup.tex
+++ b/common_resources/src/document_setup.tex
@@ -196,7 +196,7 @@
 {\multicitedelim}
 {\usebibmacro{postnote}}
 
-\begin{tcolorbox}[width=\textwidth,colback={light-gray},title={}]%
+\begin{tcolorbox}[opacityfill=0.05,width=\textwidth,colback={cvutblue},colframe={cvutblue},title={}]%
 \ifx&#2&
 \else
   \textbf{#2}:\\\\