It changes to pastel colors in warm water and neon colors in cold water.
Brad's Deals Editor Marisa,
This Barbie Dreamtopia Rainbow Magic Mermaid Doll drops from $19.99 to $11.88 at Amazon. Another version is here. This is $2 under the next best price, and we usually don't see it under $14. This doll has an average rating of 4.8 out of 5 stars from over 10,000 reviewers! Prime members get free shipping. Non-members get free shipping at $25, otherwise it adds $5.99. Sales tax is charged in most states.