fix gray1 (thx Eleonore)

beamercolorthemekfu.sty

@@ -8,7 +8,7 @@
 \definecolor{nawi}{RGB}{6,120,180}
 \definecolor{math}{RGB}{144,174,181}
 \definecolor{model}{RGB}{204,167,108}
-\definecolor{gray1}{gray}{0.85}
+\definecolor{gray1}{gray}{0.89}
 \definecolor{gray2}{gray}{0.70}
 \definecolor{gray3}{gray}{0.50}
 \definecolor{gray4}{gray}{0.20}

beamerouterthemekfu.sty

@@ -127,8 +127,8 @@
 
     \parbox[b]{.9\paperwidth}{%
         \beamer@theme@footline@section%
-    }
-    \hfill
+    }%
+    \hfill%
     \parbox[b]{.1\paperwidth}{%
         \hfill%
         \beamer@theme@footline@number\hspace*{2mm}