Expected behavior

When performing validation and is-valid or is-invalid classes are applied, switch colors should be consistent. The knob color should be the darker tint of the success or danger color.

Actual behavior

Only the "track" color is changed to reflect the is-valid or is-invalid state, while the knob color is unchanged.

Resources (screenshots, code snippets etc.)

Switches: https://mdbootstrap.com/snippets/standard/kayem79/3204137

In contrast, Checkboxes which look OK: https://mdbootstrap.com/snippets/standard/kayem79/3204143