i f.... love the realtime light groups. i can change colors in real time and nail the look that i want in 5 seconds.

this is a 10 minute render. it still renders. but in the time i was able to change the colors. both lights were in the beginning white. i changed them to blue and orange to make the cliche color contrast that is used everyday.

look at the light behind him. you see the shape of the light? you see how the shape looks physical correct on the wall? amazing.