diff -r 32ef969adeed -r a18aaf460648 sources/interface.cpp
--- a/sources/interface.cpp	Fri May 15 21:43:21 2015 +0300
+++ b/sources/interface.cpp	Tue May 26 11:41:58 2015 +0300
@@ -41,7 +41,7 @@
 //
 int Interface::color_pair (Color fg, Color bg)
 {
-	return COLOR_PAIR ((int (fg) * NUM_COLORS) + int (bg));
+	return COLOR_PAIR (1 + (int (fg) * NUM_COLORS) + int (bg));
 }
 
 // -------------------------------------------------------------------------------------------------
@@ -143,26 +143,46 @@
 Interface::Interface() :
 	Session (this)
 {
-	::initscr();
-	::start_color();
-	::raw();
+#ifdef XCURSES
+    ::Xinitscr(argc, argv);
+#else
+    ::initscr();
+#endif
+
+	::cbreak();
 	::keypad (stdscr, true);
 	::noecho();
 	::refresh();
 	::timeout (0);
-	::use_default_colors();
 	InputHistory.clear();
 	InputHistory << "";
 	OutputLines.clear();
 	OutputLines << ColoredLine();
 	Title = format (APPNAME " %1 (%2)", full_version_string(), changeset_date_string());
 
-	for (int i = 0; i < NUM_COLORS; ++i)
-	for (int j = 0; j < NUM_COLORS; ++j)
+	if (::has_colors())
 	{
-		init_pair ((i * NUM_COLORS + j),
-			(i == DEFAULT) ? -1 : i,
-			(j == DEFAULT) ? -1 : j);
+		::start_color();
+		::use_default_colors();
+
+		int defaultFg = (use_default_colors() == OK) ? -1 : COLOR_WHITE;
+		int defaultBg = (use_default_colors() == OK) ? -1 : COLOR_BLACK;
+
+		// Initialize color pairs
+		for (int i = 0; i < NUM_COLORS; ++i)
+		for (int j = 0; j < NUM_COLORS; ++j)
+		{
+			int pairnum = 1 + (i * NUM_COLORS + j);
+			int fg = (i == DEFAULT) ? defaultFg : i;
+			int bg = (j == DEFAULT) ? defaultBg : j;
+
+			if (::init_pair (pairnum, fg, bg) == ERR)
+				print ("Unable to initialize color pair %1 (%2, %3)\n", pairnum, fg, bg);
+		}
+	}
+	else
+	{
+		print ("This terminal does not appear to support colors.\n");
 	}
 
 	render_full();
@@ -602,6 +622,9 @@
 {
 	int ch = ::getch();
 
+	if (ch < 0)
+		return;
+
 	if (ch == KEY_RESIZE)
 	{
 		::clear();
@@ -702,6 +725,7 @@
 		break;
 
 	case KEY_BACKSPACE:
+	case '\b':
 		if (CursorPosition > 0)
 		{
 			mutable_current_input().remove_at (--CursorPosition);