Changing the default forum_new.gif and forum_old.gif icons

[Zacaretas]

Would it be as simple as creating a new transparent icon and naming it forum_new.gif and forum_old.gif respectively?

The reason I ask, is because I would love to have a different style that has different icons. For instance, can the default style use the default forum_new and forum_old icons, while a new style uses the custom ones? Or is the change universal?

Thanks in advanced!