Canyons don't have a single color! They can be many different colors depending on the rock formations and the surrounding environment. Here are some common colors you might see in canyons:

* Red: From iron oxide in the rock.

* Brown: From various minerals and weathering.

* Yellow: From sandstone and other sedimentary rocks.

* White: From limestone and other light-colored rocks.

* Gray: From granite and other igneous rocks.

* Green: From moss and vegetation.

* Blue: From the sky reflecting on water in the canyon.

So, the color of a canyon depends on the specific location and geological makeup.