I wouldn't make two copies of the entire building. Just make a day and night version of the signs and windows. See Dev Docs 4.04 Section 5 I...
This may help ... Day / Night Lighting Effects Some building types require a night-time effect, to simulate the lights being switched on at...
As you discovered, the trees are merged into one large scenery object per tile. This improves frame rates and gives better control over view...
Look at 1:09:30 ish here: https://www.youtube.com/live/kNyCKkwQWfI?si=43OI4TTMAcI3dqnD&t=4171
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