I can theoretically use it for the signatures, although I'm not sure it'll work for the archived talk pages because the list of 'what links here' pages redirect to the message walls now. I won't be able to use it for talkbubbles.
Back in 2012, when we were moving towards a newer look from the tiled background you made, you left a message somewhere on Community Central to help us out with the size of the new background. Do you still remember where that was, or who the user was? I'd like to know. Cheers.