weird pink colour in sub-menu items

Hi, I`m testing the Perfume theme here: http://miroslawski.net/julita/
I have a problem with colours of sub-menu items. Instead of being black with white txt and grey with white text when hoovered over, they are pink and grey when hoovered.
I discovered it is one of the pink PNG files getting in the way here (menulia-hover.png) - seems like part of it is rendered as background for the sub-menus.
It makes the submenu selection awkward.

Do you have a solution for that? Thanks!