So I hacked together another UI theme for CommonCore. No, it’s not actually available in game, that’s for demonstration purposes only.
This is based on the Retro Windows GUI pack by Comp-3 Interactive. It doesn’t look quite right because of the limitations of the CommonCore theme engine, but hey, it’s not meant to be a serious thing anyway.
Download it here, while quantities last: https://www.mediafire.com/file_premium/63gs0rp4u75rqhk/ChicagoTheme.zip/file
(due to ambiguous licensing it won’t be available in the CommonCore modules repository)