I think will be good if folder tabs supporting windows visual styles colors.
I second that, the tab bar has the nicer looking tabs and the folder tabs are a dull gray. What's up with that ?
I am submitting an official feature request to take the best customizations currently available to both Folder Tabs and Style Tabs (the tabs on the Tabbar) and make them available to both sets of tabs.
In case you were not aware:
The Styles tabs on the tabbar can use the background image, by right-clicking it in Customize mode and selecting Transparent Tabs from the menu. Otherwise, they use the menu color from the underlying Windows XP theme.
The Folder Tab colors also use the menu color from the underlying Windows XP theme. However, these colors can be customized in Preferences > Display > Colors & Fonts > Item = Folder Tabs.