Question

why is the sky is not coloured?​

Answer 1

The sky merely scatters the VIBGYOR colours. Due to distance factors and atmospheric refraction, the colour blue reaches out eyes.

Hence we see the blue color of the sky.

#BAL #answerwithquality

Answer 2

We see the sky as colored because our atmosphere interacts with the sunlight passing through it. This phenomenon is called "scattering." The type of scattering responsible for blue sky is known as Rayleigh scattering.