An adaptation that allows an organism to blend into the colors and shapes of its environment is called

Camouflage. That's what it is.

Structural adaption is an adaptation that allows an organism to blend into the colors and shapes of its environment.

There are two types of adaptation:

1. Behavioral adaption which includes actions taken by organism that helps them to live in environment.

2. Structural adaptations: The adaption which includes physical characteristics taken by organism.

As color change and shape are physical characteristics so it is structral adaption.