Hi Stephen,
Thanks for your immediate response. This two color isolation can be achieved with three tracks, tracks 1 & 2 for colors and 3 for B/W .
I can isolate dress color in track 2 and skin tone (complexion of the subject)in Track 1.Fine. But, once I isolate the complexion of the subject,all other persons in the video exhibit same color complexion with colorless or B/W dresses. What I want to achieve is the subject alone should have complexion and color dress. All others should be be totally B/W
Any suggestion?