The transparent part was just the std part with objects deleted from the BB svg until it’s just an outline, and the rest is just grey wire looking like solder links.
I’m not very good at using FZ so I don’t think I can make a good “Using” series. You’re the best part maker, and I think Sub is the best user, so maybe he should do a video series.
The FZ boys had a good idea about adding Pref and Strip board, but in practice it’s not perfect to use as a visual record without a bit of fudging. Currently it’s the least of FZ problems so the work-around is good enough.