
This lovely photo was taken during Trinity's production of Three Penny Opera. There is a clear spotlight seen here center stage on the two characters Macheath and Tiger Brown. There is a distinct edge and a clear difference in color temperature between the spotlight and the rest of the lights, insisting we focus on the two characters.

This is another example of different color temperature creating focus. This is from the extremely popular Broadway musical Hamilton. Even though Aaron Burr is doing the similar choreography as the other characters onstage, the fact that his light is significantly different from the rest of the stage makes him the focus of the scene, in addition to him being center stage. There isn't a clear sharp edge on his spotlight, but the color difference is enough to make him the focus.