tweak

Common/GmshMessage.cpp

@@ -376,7 +376,7 @@ void Msg::Direct(int level, const char *fmt, ...)
 
   if(CTX::instance()->terminal){
     const char *c0 = "", *c1 = "";
-    if(!streamIsFile(stderr) && streamIsVT100(stderr)){
+    if(!streamIsFile(stdout) && streamIsVT100(stdout)){
       c0 = "\33[34m"; c1 = "\33[0m";  // blue
     }
     fprintf(stdout, "%s%s%s\n", c0, str, c1);