I asked that myself, too, believe me or not. probably I exiggerated / stressed it a bit, during the raw conversion?.. (I always do so, trying to keep color intencity abit above the level, than it was for real, especially if the frame is shot during a gloomy sunless weather. thats just my approach, what I stand for). but other colours here are still natural, more or less... so, indeed, probably they are not that grey-dull in reality as we use to think about sparrows...