Another option, which is probably a bit more difficult, would be to find a LED fan you like but
ignore the LED color, find the LED size,
buy purple LEDs, and replace the LED fan's LEDs. That's definitely a lot more work, but if those aren't available anymore, it might be a viable option.
It's also possible to maybe change around what follows the color scheme. If you really want a purple glow, why not go with
LED strips? Phobya has
an interesting product (longest and most expensive one) where you can select the color, intensity, etc. through a
remote control. They also have a static purple one.