Here is a different photo showing color of a group of new Yenko's. I took this picture and changed it to black and white. So by looking at this photo and comparing it to the other photo here is my best guess as to the colors of the 2-13-69 photo
Top left to right Nova Fathom Green, Camaro Rally Green, Camaro Daytona Yellow{no doubt}
Bottom left to right, Camaro LeMans Blue, Camaro Hugger Orange, Camaro Fathom Green