diff --git a/format.hpp b/format.hpp
index a339cd8..f0500a8 100644
--- a/format.hpp
+++ b/format.hpp
@@ -9,7 +9,9 @@ using std::to_string;
 #define YELLOW "\033[33m"
 #define GREEN "\033[32m"
 #define RED "\033[31m"
-#define BACK "\033[0m"
+#define BACK "\033[0;0;0m"
+#define UNDERLINE "\033[0;0;4m"
+
 
 string format_response(vector<int> response) {
 	return YELLOW + to_string(response[0]) + BACK + " / " +
diff --git a/main.cpp b/main.cpp
index 93fcca0..b17571e 100644
--- a/main.cpp
+++ b/main.cpp
@@ -10,6 +10,7 @@ using std::cout;
 using std::cin;
 using std::string;
 using std::vector;
+using std::getline;
 
 // To avoid typos
 #define BOT "bot"
@@ -18,19 +19,23 @@ using std::vector;
 
 int main(void) {
 	// Take game parameters
-	cout << "Length of sequence : ";
-	int N; cin >> N;
+	cout << "Length of sequence (default=5) : ";
+	string string_N; getline(cin, string_N);
+	int N = (string_N == "") ? 5 : stoi(string_N);
 
-	cout << "Number of colors : ";
-	int M; cin >> M;
+	cout << "Number of colors (default=8) : ";
+	string string_M; getline(cin, string_M);
+	int M = (string_M == "") ? 8 : stoi(string_M);
 
-	cout << "Who plays [" << HUMAN << "/" << BOT << "] : ";
-	string player; cin >> player;
+	cout << "Who plays [" << UNDERLINE << HUMAN << BACK << "/" << BOT << "] : ";
+	string player; getline(cin, player);
+	if(player == "") player = HUMAN;
 
 	bool learn = 0;
 	if(player == HUMAN) {
-		cout << "Do you want to know what bot learns [y/n] : ";
-		string reply; cin >> reply;
+		cout << "Do you want to know what bot learns [" << UNDERLINE << "y" << BACK << "/n] : ";
+		string reply; getline(cin, reply);
+		if(reply == "") reply = "y";
 		learn = (reply == "y");
 	}