diff --git a/poc b/poc
index 84e502b..c141df4 100755
--- a/poc
+++ b/poc
@@ -39,20 +39,26 @@ function dump_stderr {
   miaou_debug --stderr--
   mapfile -t tmp_error <"$MIAOU_BASH_ERROR"
   for i in "${tmp_error[@]}"; do
+    >/dev/tty echo -ne "\e[90m"
     echo -e "$i"
+    >/dev/tty echo -ne "\e[0m"
   done
   miaou_debug --end of stderr--
 }
 
 function dump_failure {
   miaou_debug --error box--
+  >/dev/tty echo -ne "\e[95m"
   echo FAILURE: "$failure_type"
+  >/dev/tty echo -ne "\e[0m"
   miaou_debug --end of error box--
 }
 
 function dump_stacktrace {
   miaou_debug --stacktrace--
+  >/dev/tty echo -ne "\e[90m"
   echo stacktrace...
+  >/dev/tty echo -ne "\e[0m"
   miaou_debug --end of stacktrace--
 }