I like Maxima's haircut, makeup, outfit - altogether great. She seems to be darkening her hair color, and maybe growing out the roots. If she is darkening her hair (and it's not my imagination), I like the color better than the pale blond her hair was heading towards before. The hair color seems more honey-colored, more natural, and flattering.
Everyone looks very happy and relaxed. As a follower of British royalty as well, it's strange to me to see Queen Beatrix stepping aside for part of the photocall so that the focus is WA, Maxima and Amalia. I can't imagine Queen Elizabeth II, or any of the other senior royals, stepping aside and shifting the focus to lower-ranking royals (except for weddings or something like that). Beatrix looks so much the proud grandmother, and happy, and not worried about seniority protocols. Very nice!