In some embodiments, a method selects a context for a user account and selects a plurality of collections for an interface. A collection includes a set of videos. The method selects a theme from a plurality of themes for a collection in the plurality of collections based on the context. The plurality of themes apply different display formats to the collection. The method sends an identifier for the theme and information for the collection to a client device being used by the user account to indicate to the interface the theme to use to display the collection with the plurality of collections.