Th epages i provided are BV pages, so the fields background color is set by you when customizing the page. If it changes between your BV page and the published (or previewed) page, it can probably be that you have the Google Autofill feature enabled. It changed the color of fields it recognizes to make you understand that these fields can be autofilled.
If a visitor DOESN'T have this feature enabled, it will NOT change the colour.background

__________________
Navaldesign
Logger Lite: Low Cost, Customizable, multifeatured Login script
Instant Download Cart: a Powerfull, Customized, in site, DB driven, e-products Cart
DBTechnosystems.com Forms, Databases, Shopping Carts, Instant Download Carts, Loggin Systems and more....
Advanced BlueVoda Form Processor : No coding form processor! Just install and use! Now with built in CAPTCHA!