Isabel Kelly (Julia Roberts) puts on some lipstick while driving Anna and Ben to their mother’s house.
The slick metal tube is Clinique Almost lipstick in the famous shade Black Honey, leaving a lovely sheen on lips.
She lets Anna (Jena Malone) wear it: the colour is subtle and natural, appropriate even on a young girl.
I found this id in Pretty Iconic: A Personal Look at the Beauty Products that Changed the World by Sali Hughes.
When the main four characters – the make-up artist Ruby (Jena Malone), the models Sarah (Abbey Lee) and Gigi (Bella Heathcote) and the newcomer Jesse (Elle Fanning) – first meet, they have a conversation about lipsticks. Gigi kicks it off by saying she loves the lip colour she’s wearing; Ruby comments on the name of the shade – Redrum .
Plum Passion is a popular name for lipsticks. Both Maybelline and L’Oreal have Plum Passion lipsticks in their collection.
The last shade she names is Peachy Keen. A product by Gerard Cosmetics comes to my mind, along with a line by the super-wicked Courtney Shayne, the protagonist of the black comedy Jawbreaker (1999) by Darren Stein.
 This word comes from The Shining by Stephen King.