idvd theme folder has red minus sign

I have managed to install copy of idvd and found the theme package and installed that. When I launch iDVD, I get a message to locate the theme folder. I found it in the libraries/application support/iDVD as instructed in this forum previously, but my folder has a red minus sign and will not open.

Also when I try to open a .dv file, or .mov file, they are grayed out and will not open.

Can anyone help me?