I cannot speak for b.green, but when I had a lone-surviving golly, she swam peacefully up and down the glass of the tank. She seemed to eat normally as well. Although she appeared to be happy, she did not interact very much with the other fish. In addition, the males in the tank paid no attention to her as they did with the other molly females.
They mostly kept to themselves until I got some male snakeskin guppies from Aquabid. Now they are contstantly swirling around and chasing each other. They are very similar to each other in color. They don't pay any attention to the other guppies or the mollies.