Frequency is connected to loudness for all amplitudes. Big waves travel faster than small waves in the same medium. Different colors of light are different types of waves. Pitch is related to intensity. Light is a particle.
Light is a mixture of particles and waves.
Light waves and radio waves are not the same thing. In refraction, the characteristics of light change. The speed of light never changes. Rays and wave fronts are the same thing. There is no interaction between light and matter.