Friends Frame Textures Question

[Moosetrax]

I am creating a set of graphics for an interface for Classic WoW and am running into trouble with the IgnoreFrame portion of the FriendsFrame.

Does anyone know of a way to find out what textures are being used in the lower half of the IgnoreFrame? It doesn't appear to be IgnoreFrame-BotRight.blp and Ignoreframe-BotLeft.blp, because replacing those two files does nothing in game.

Or, does anyone know what textures I should be using for the lower half of the ignore frame?

Thanks for the help!