message: Write empty ini entry when color is default value
diff: @@ -924,6 +924,9 @@ void Cols::shutdown( CIniFile &inifile )
  {
  const char *key = s_colordata[ i ].name;
  + if ( Cols::is_default( ( colors_t )i ) )
  + inifile.PutStr( key, "", "$imgui_colors$" );
  + else
  inifile.PutUint64( key, s_colordata[ i ].color, "$imgui_colors$" );
  }
  }
  