Can I set a label (text) in popup menu (gtk.Menu) but without hovering effect, for example:
LABEL
MenuItem1 (hover effect)
MenuItem2 (hover effect)
MenuItem3 (hover effect)
EDIT:

This is not popup menu example but it show hover effect.
For hovering effect I mean when I click left button mouse it will open the popup menu. In this menu there are couple option (like in real one: edit, paste, copy, properties). When I move mouse pointer to each item in this menu it will change background one item to other color. Like at the image.
You can use Widget.set_sensitive(False) to disable the menu item. This way, no hover effect is generated, but the menu item won’t be clickable also.