BYD's Sealion 7 colour options are Atlantis Gray, Cosmos Black, Aurora White and Shark Gray. In BYD's photos, Atlantis Gray looks like a mid blue, and Shark Gray is a darker, blue toned grey.
BYD does not offer a dual tone, and it lists all four colours for every version, from the base model Dynamic to the top model Performance AWD. The Festive Edition's release covers only its Rich Tan and Black cabin, so it takes the Premium's four colours.
No colour costs extra. Inside, the Dynamic and Performance AWD are black, while the Premium can also be had in Tahiti Blue. Every photo on this page comes from BYD India's website.