Google Messages has expanded its customization capabilities to include standard SMS conversations, allowing users to set custom chat themes. This feature, which was previously available only for RCS chats, has been quietly rolled out, enabling users to access chat themes in non-RCS chats. Users can find the chat themes option in the three-dot menu or by navigating to the contact info page. The customization applies only to the individual who sets it, rather than affecting all participants in a chat. This update enhances the visual appeal of SMS conversations without imposing changes on others.