As a matter of fact, there are several curlies going "silver". Here is a link to that discussion:

CO-Vo5 Kiwi Lime
Regular CO-Tresemme Naturals Silicone Free
Deep CO-Aussie 3 Minute Miracle

Shampoo-Jhirmack Silver Plus Ageless Shampoo (once a week)
Gel-LA Looks Sport (first day)
Aussie Miraculously Smooth (second day)
CO wash/occasional ACV rinse

Going silver-last hair color 4/10/15