diff --git a/acme.sh b/acme.sh
index 8c067fd2..f20d935f 100755
--- a/acme.sh
+++ b/acme.sh
@@ -104,21 +104,21 @@ if [ -t 1 ]; then
 fi
 
 __green() {
-  if [ "$__INTERACTIVE" ]; then
+  if [ "$__INTERACTIVE${ACME_NO_COLOR}" = "1" ]; then
     printf '\033[1;31;32m'
   fi
   printf -- "%b" "$1"
-  if [ "$__INTERACTIVE" ]; then
+  if [ "$__INTERACTIVE${ACME_NO_COLOR}" = "1" ]; then
     printf '\033[0m'
   fi
 }
 
 __red() {
-  if [ "$__INTERACTIVE" ]; then
+  if [ "$__INTERACTIVE${ACME_NO_COLOR}" = "1" ]; then
     printf '\033[1;31;40m'
   fi
   printf -- "%b" "$1"
-  if [ "$__INTERACTIVE" ]; then
+  if [ "$__INTERACTIVE${ACME_NO_COLOR}" = "1" ]; then
     printf '\033[0m'
   fi
 }
@@ -1136,7 +1136,7 @@ _readKeyLengthFromCSR() {
     echo "$_outcsr" | tr "\t" " " | _egrep_o "^ *ASN1 OID:.*" | cut -d ':' -f 2 | tr -d ' '
   else
     _debug "RSA CSR"
-    echo "$_outcsr" | tr "\t" " " | _egrep_o "(^ *|RSA )Public.Key:.*" | cut -d '(' -f 2 | cut -d ' ' -f 1
+    echo "$_outcsr" | tr "\t" " " | (_egrep_o "^ *Public.Key:.*" || _egrep_o "RSA Public.Key:.*") | cut -d '(' -f 2 | cut -d ' ' -f 1
   fi
 }
 
@@ -3940,6 +3940,10 @@ signcsr() {
     return 1
   fi
   _debug _csrsubj "$_csrsubj"
+  if _contains "$_csrsubj" ' ' || ! _contains "$_csrsubj" '.'; then
+    _info "It seems that the subject: $_csrsubj is not a valid domain name. Drop it."
+    _csrsubj=""
+  fi
 
   _csrdomainlist=$(_readSubjectAltNamesFromCSR "$_csrfile")
   if [ "$?" != "0" ]; then
@@ -4892,6 +4896,7 @@ Parameters:
   --ca-bundle                       Specifies the path to the CA certificate bundle to verify api server's certificate.
   --ca-path                         Specifies directory containing CA certificates in PEM format, used by wget or curl.
   --nocron                          Only valid for '--install' command, which means: do not install the default cron job. In this case, the certs will not be renewed automatically.
+  --no-color                        Do not output color text.
   --ecc                             Specifies to use the ECC cert. Valid for '--install-cert', '--renew', '--revoke', '--toPkcs' and '--createCSR'
   --csr                             Specifies the input csr.
   --pre-hook                        Command to be run before obtaining any certificates.
@@ -5339,6 +5344,9 @@ _process() {
       --nocron)
         _nocron="1"
         ;;
+      --no-color)
+        export ACME_NO_COLOR=1
+        ;;
       --ecc)
         _ecc="isEcc"
         ;;