I know the hair-dye and hair care industry is a multi-million dollar industry. Furthermore, I know very few women who haven't played around with their hair or had it colored/highlighted or professionally styled or cut at some point in their life-time.
No, I do not naturally have red hair--though some of the strands are naturally strawberry blonde in color. I started playing around with my natural color (more of a blonde color) in early 2011. Most everyone who knows me personally, thinks of me as a blonde so I don't feel the need to come up to random strangers in public and declare, "By the way, I dye my hair red sometimes but I'm natural everywhere else".
Anyways, I like the color and if famous movie stars and celebrities can get away with dying their hair, why can't those of us average folk in the mass population? Christina Hendricks dyes her hair red (she has a naturally dish-water blonde color) and no one thinks anything about it (link below). I say, do what works for you. People tell me that the color works for me though.
All this being said, there are plenty of red-haired genes in my family however.
For example, here is a picture of my naturally red-headed Uncle (my father's brother) and his family. Nathan (the dark haired man) married one of my cousins. My Aunt is the dark-haired woman who has noticeable lighter highlights in her hair.