Little Trouble with Nav Bar

This is minor, but I do want to change. I used the Interfaced Horizontal nav bar on the site ( http://animalprops.com/ ) . When I first did so, I changed the background from the charcoal color of the button to white.

I had the white background all across the Nav Bar, and just the lettering for the categories. I now have these dark colored 'spacers' between the categories and can't figure out how to get back to plain white. I opened up layers, looked everywhere and can't figure out.

Thank you!
Sandy

Set line color of the navbar button rectangles to "no color".

Oh my gosh, thank you !! (obviously it worked!) - never would have figured that out....
:)