Yes, overcast is definitely best. However, some plants dont open up unless its sunny, so in that case it has to be a cloudy day, allow the plant to bask in the sun and open up fullly, then catch it in full glory when a cloud passes. Now that nneds patience.
When we go on holiday,there are always some happy members in the family, no matter if it shines or not.
Good the Solanum survived. It sounds like it can takes some rough treatment! The cut back probably did it good!
Poor hubby gets to fix that arbor thought. Encourage him and tell him the world awaiats for photos, and say Hello and thank you from me for helping with the Web Gen project!