[chimera-dev] Labeling and coloring chains

Hi, I am very new to Chimera. If you have time, I would really appreciate your answers. I am working with a structure that contains 80 chains. 1. I would like to color 40 chains at once the same color, rather than manually doing it one by one. How do I do this? 2. Also, I would like to add labels to the individual chains I choose on the structure. How do I do this? Thank you, Deniz