Are warm or colored speakers disrespectful of musicians/producer/engineers?

Simply put there is no disrespect. First, the original intent cannot be reproduced by any system due colorations in the playback system and the room that its played back in. If a room is glass lined with tile floors, a warm colored speaker maybe essential for an enjoyable listening experience. If I am not mistaken, this why we pursue this hobby. Second, we all hear differently and the customer is free to choose what sounds best given their listening environment. Lastly to reproduce the studio session as accurately as possible, you would have to purchase the exact equipment in the recording chain: the studio monitors, the amplifiers, the mixing board, and the source, not very practical. Even after all this, the room would color the final playback making the whole endeavor a waste of time. So the final take away is to pick what you feel best fits the room and your listening expectations and enjoy the music