Feature - 256-color support

- Fixed bug that caused \033[m sequences to be emitted when no color
  is specified, in 16-color mode.

src/Color.cpp

@@ -418,18 +418,35 @@ std::string Color::colorize (const std::string& input)
   // 256 color
   if (value & _COLOR_256)
   {
+    bool needTerminator = false;
+
     if (value & _COLOR_UNDERLINE)
+    {
       result << "\033[4m";
+      needTerminator = true;
+    }
 
     if (!(value & _COLOR_NOFG))
+    {
       result << "\033[38;5;" << (value & _COLOR_FG) << "m";
+      needTerminator = true;
+    }
 
     if (!(value & _COLOR_NOBG))
+    {
       result << "\033[48;5;" << ((value & _COLOR_BG) >> 8) << "m";
+      needTerminator = true;
+    }
+
+    result << input;
+    if (needTerminator)
+      result << "\033[0m";
+
+    return result.str ();
   }
 
   // 16 color
-  else
+  if (value != (_COLOR_NOFG | _COLOR_NOBG))
   {
     result << "\033[";
 
@@ -457,11 +474,11 @@ std::string Color::colorize (const std::string& input)
       result << (29 + (value & _COLOR_FG));
     }
 
-    result << "m";
+    result << "m" << input << "\033[0m";
+    return result.str ();
   }
 
-  result << input << "\033[0m";
+  return input;
-  return result.str ();
 }
 
 ////////////////////////////////////////////////////////////////////////////////