Can we add the "appearance" rule?

[eckstein]

I'm diving into support for various <form> elements and controls and I've been playing with appearance as a way to manipulate how checkboxes/radios look without using the for: connection for a label or :psuedo elements.

So far appearance: none works in

• All Apple inboxes, all devices
• Yahoo! desktop and Android (I'm assuming iOS as well)
• AOL (although with AOL you need to use webkit-appearance: none)

I can confirm it doesn't work in:

• Any Gmail inbox
• Any outlook inbox (including outlook.com)

It's really only useful when you have access to the :checked pseudo selector, otherwise there's no way to change it's state. But with :checked enabled, you can use this to replace default input styles without hiding them or using labels (great for interactive email support).