WebBrowser & XP Themes

Doesn't the WebBrowser control support WinXP themes? I am using the Silver XP theme but have a look at the difference in the button when the page is viewed in the WebBrowser control & when the same page is viewed in IE (the 2 images attached below)!

Any idea how to make the WebBrowser control adhere to the WinXP themes?

There is an advanced setting which controls if the theme is applied or not. Perhaps tracking down the registry setting should allow you to apply it.