Made the font of the captions of listings the same as tables and figures.

beamerthemelumc.sty

@@ -102,6 +102,10 @@
   numberstyle = \tiny
 }
 
+% Change the font of the captions of listings.
+\usepackage{caption}
+\captionsetup[lstlisting]{font={footnotesize}}
+
 % Define an empty language to use only for typesetting.
 \lstdefinelanguage{none}{}