added color

qcd_function

@@ -215,7 +215,10 @@ function igrep () {
     while true
     do read -e -i "$args" args
        echo $@
-       grep $args "$@"
+       grep --color=auto $args "$@"
+       if [ "$?" -ne 0 ]
+       then echo _no_matches_  | grep --color=auto ".*"
+       fi
     done
 
 }