OK, the version of Finley Park I posted a few days ago had not gone through proper quality control. After giving the person responsible (me) a stern talking to, I've updated the version linked above and I'll also point to it here:
Google Drive link to Finley Park, version 2.
In addition to having the correct outer fence and fixing some texture files that weren't showing correctly, version 2 has working day and night backgrounds! Thanks again to kcstengelsr for the input!