I dont think that there has been any full graphic packs for v5.X. I only new of two that were made (kinda). There is one that subs the church for a mosque over on .net, but I've seen it floating around on other communities too. The second was a project that started over in the .de server. This project was for a winter/snow theme and it looked fantastic. It is a pity that it was never completed.
The great thing of v5.X is that it is backward compatible with the old graphic packs for v4.X [using the ticky box], however I would only recommend one of them as the rest are pretty much rubbish. This one, seems to have disappeared from the net as I cant find it. I could have sworn it was know as the settlers, but its def not it. The only prob with it, when it was around was that it was used that the church and statue were out of place.
Yeah, graphic packs are cursed.
Tbh, making your own graphic pack would be the best option if you don't want to use the standard graphics.