There's three of them in my social group alone. Maybe we're all unusual, I don't know. Hurrycanes are popular and purple is the only feminine color they come in. If you're worried, just wrap a strip of colorful duct tape around the cane.
Someone accidentally grabbing my cane is not even on the list of stuff I worry about, let alone a priority. If cost isn't a major concern, and I assume it's not since you mentioned perhaps buying a new cane just due the color, then you could always have two canes and keep the backup folded and tucked away, just in case.
I have a second one myself, also purple, for if I lose mine or forget it or it breaks, whatever. There's been a few incidents where I came into a restaurant, parked my scooter at the door and used the cane to hobble to my table, and then the scooter was brought to the table afterwards so I didn't have to walk back. And in the scuffle of grabbing my phone and purse and Mickey ears and bag of leftovers and making sure I didn't leave my credit card on the table and having a friend heave me up from my chair, I just didn't notice my cane hiding behind the chairs and drove off without it. Someone's always noticed it missing pretty quickly and gotten it back, but you never know.
I make a point of having a backup of anything that I absolutely need, when possible to do so.