Is it possible to change the background color of a radio button input in Firefox/Chrome like in IE? (Without using images)
Run this in both IE(<9) and Firefox/Chr
The short answer is "no".
Even if you do manage to get something that works in one browser, browsers tend to handle form controls very differently, meaning it's nigh impossible to achieve cross-browser compatibility.
Disappointing, I know. Check out this article for more info: http://www.456bereastreet.com/archive/200409/styling_form_controls/
Just by the way, why do you want to change the background color? Generally a radio button background will just pick up the background color of its container.