I believe those are training jerseys. They were supposed to bring dark jerseys, but showed up with their whites. I think the US only had whites available, too.
I know I may take some heat for this statement but it is how I feel: I have no interest in women's soccer. I would not even care if Mexico won the Women's World Cup. I must state that I have nothing against women's sports. I do enjoy such sports as women's indoor volleyball, women's tennis, and a few others. I am happy that women have their soccer world cup. More power to them and those that find it interesting.
This question would be better suited for the Women's forums but screw it. Do the players exchange jerseys after the match? If so, YOW!!!! I've always had a thing for "The Female Rafa" Monica Gonzalez and Hannah Ljungberg. The Monica bit is because of 3 things. She's Mexican. She's #4. She's Irish Alum. Maybe in some sick way, I have an infatuation with Marquez. Oh God. I'm gay.