Today, Steve Sande begged me to add a full-screen button to Colloquy. He offered me chocolate and kittens, neither of which is particularly good for me. But he's a good guy and I like him and his wife so I went ahead and figured this out. [Editor's note: Actually, she was offered chocolate-covered kittens, not chocolate and kittens.]
I am so warning you: if you are not comfortable at the command line, just skip on to the next post.
Seriously.
Still here? Let's go then.
Copy the App You probably don't want to edit the original, so copy the app to the Desktop.
Locate the compiled nib files