I am a natural red head. I've dyed my hair brown and purple many times and 5 years ago had the firetruck red thing going on. Thinking maybe about giving light blond a go. Or white with blue... But I'm in a band and don't want to give the wrong vibes visually about our music...
In general only dying it as dark or darker really works imo. If your natural hair is a very light red, then you can pull it off, otherwise it would just be so obviously fake. Fake blond is not appealing for me.
I don't like unnatural hair colors either... but I don't assume anything based on hair color.
I think you could look good with a very light almost white-ish blond color, but you'd really have to keep up on it because once the roots started to come out its levels of amazing would go down pretty far.