The first, to the left is from the Revue de la Mode (obviously a French fashion journal) from it appears to be 1886 (that seems right given the style of the bustles ~ my eyesight is kinda killing me at this point so it's hard to read the tiny faded print in the lower left.
I love the gold and green dress most, but the evening gown with the satin or velvet bodice and then the contrasting gold overskirt and purplish flowers. It works, I guess, but this is one of those places where I just know my sense of color is "off". I would never imagine deliberately making such a combination!
It's also interesting to note that black was actually popular in fashion during various periods, which helped alleviate it of its reputation for being the color of mourning. Though we still associate it with funerals today, it's also known as common party or cocktail wear: that "little black dress" for any and all occasions.