add column background to latex
diff --git a/R/zzz.R b/R/zzz.R
index fd83d76..e716b96 100644
--- a/R/zzz.R
+++ b/R/zzz.R
@@ -5,4 +5,5 @@
   usepackage_latex("multirow")
   usepackage_latex("xcolor", "table")
   usepackage_latex("wrapfig")
+  usepackage_latex("colortbl")
 }