Here's a neat evolution trick.

Toxic animals can use bright colors to warn off predators, but those same colors make the animals more conspicuous. So how did those colors evolve without causing higher predation rates amongst the animals with the warning colors?

One possible answer: several steps are involved in evolving to full warning colors, and in the initial stages the warnings are hidden until the animal displays them to potential predators.

https://www.earth.com/news/how-did-warning-coloration-evolve-in-animals/