You can import vector shapes in various formats, either by file / import / shape or file / import / svg
I've just tested a svg format file. Essentially it converts the vector to a poly line mask which is added to a BG node. They are grouped together, so you have to open the group node to edit the contained Poly and BG nodes. So you can then set the BG colour or gradient to your choice; or stroke the vector / poly line by changing the Border Width slider.
PS: I'm using the Studio version