OVER THE RAINBOW: Hermès beamed a nighttime rainbow over La Place de la Concorde in Paris Thursday during the first Fete de la Couleur, or Festival of Color, to celebrate the International Day of Children’s Rights. Pink and orange lights danced in trees in the Tuileries garden while guests jazzed up outfits with an orange Hermès scarf here or a pink-feathered hat there. Initiated by Hermès, whose Faubourg Saint-Honoré boutique was illuminated pink and orange for the occasion, partners included MAC cosmetics whose makeup artists daubed bold color onto willing partiers. Guest of honor, rising French actress Léa Seydoux, said she’s just wrapped filming Quentin Tarantino’s remake of “Inglourious Bastards” in Berlin, in which she plays a farmer. “The clothes were pretty unattractive,” she said. Seydoux spent part of her childhood in Senegal, where funds raised from the evening’s auction, which included Bettina Rheims photographs of children, will go to UNICEF’s school projects there.