diff --git a/R/row_spec.R b/R/row_spec.R
index 3d08857..ea96971 100644
--- a/R/row_spec.R
+++ b/R/row_spec.R
@@ -203,14 +203,14 @@
                                      hline_after, extra_latex_after)
     temp_sub <- ifelse(i == 1 & (table_info$tabular == "longtable" |
                                    !is.null(table_info$repeat_header_latex)),
-                       stringr::str_replace_all, stringr::str_replace)
+                       gsub, sub)
     if (length(new_row) == 1) {
-      out <- temp_sub(out, paste0(target_row, "\\\\\\\\"),
-                      paste0(new_row, "\\\\\\\\"))
+      out <- temp_sub(paste0(target_row, "\\\\\\\\"),
+                      paste0(new_row, "\\\\\\\\"), out, perl = T)
       table_info$contents[i] <- new_row
     } else {
-      out <- temp_sub(out, paste0(target_row, "\\\\\\\\"),
-                  paste(new_row, collapse = ""))
+      out <- temp_sub(paste0(target_row, "\\\\\\\\"),
+                  paste(new_row, collapse = ""), out, perl = T)
       table_info$contents[i] <- new_row[1]
     }
   }
diff --git a/R/util.R b/R/util.R
index 785c6ad..474f352 100644
--- a/R/util.R
+++ b/R/util.R
@@ -110,7 +110,8 @@
     "\\usepackage[normalem]{ulem}",
     "\\usepackage[normalem]{ulem}",
     "\\usepackage[utf8]{inputenc}",
-    "\\usepackage{makecell}"
+    "\\usepackage{makecell}",
+    "\\usepackage{xcolor}"
   ))
 }
 
diff --git a/R/zzz.R b/R/zzz.R
index 36133e7..c12793b 100644
--- a/R/zzz.R
+++ b/R/zzz.R
@@ -15,7 +15,7 @@
       usepackage_latex("threeparttablex")
       usepackage_latex("ulem", "normalem")
       usepackage_latex("makecell")
-      # usepackage_latex("xcolor")
+      usepackage_latex("xcolor")
     }
   }
   auto_format <- getOption("kableExtra.auto_format", default = TRUE)