I think I know what you are after Joecool1081, and I can help.
If you mean how do you get your actors all white? Like in that rooftop shot? This is my method....
Shoot an actor on a greenscreen. Good luck finding one as sexy as this.
Then key out the green as per usual. Then click on grade and pick the brightness filter. Slide it all the way to the right and it makes your actor white
Slide it all the way to the left and it makes your actor black
If you want your actors to be a colour, slide the brightness slider all the way to the right to make them white, click on the ambient light filter and slide strength to full. I picked green in this one
Thats it. Is that what you meant?
p.s. I've been thinkin' about my baby it don't matter if you're black or white.