UPDATE: SimGuruLyndsay has confirmed that these customization features are exclusive to Pets.
We are not making Create a Style for Sims. The color wheel you see has been created exclusively for TS4 Cats & Dogs create a pet feature.
— Lyndz @ Gamescom (@SimGuruLyndsay) August 21, 2017
Have you seen the latest The Sims 4 Cats & Dogs Expansion Pack Trailer? If not, there is a small screen in the corner in one of the trailer’s segments which contains a color wheel, color customization, pattern selection and more!
It’s not yet known if this feature will be implemented to other The Sims 4 Base Game features as well. Still, a very nice addition to this pack!