What do you mean, Andrew?
If I understood correctly, no. I use a Child Theme (CSS) to add the modification. I successfully removed the shadow off the menu at the top by using this code:
.menu-bottom-shadow {
background: url("images/sprite_h.png") repeat-x scroll left top white;
height: 3px;
width: 100%;
}
However, that doesn’t sort out my original problem of trying to remove the borders on the sides.