_switch.scss

.switch {
    label {
        font-weight: normal;
        font-size: 13px;

        .lever {
            margin: 0 14px;
        }

        input[type=checkbox] {
            &:checked {
                @each $key, $val in $colors {
                    &:not(:disabled) {
                        ~ .lever.switch-col-#{$key} {
                            &:active {
                                &:after {
                                    box-shadow: 0 1px 3px 1px rgba(0, 0, 0, 0.4), 0 0 0 15px rgba($val, 0.1);
                                }
                            }
                        }
                    }

                    + .lever.switch-col-#{$key} {
                        background-color: rgba($val, 0.5);

                        &:after {
                            background-color: $val;
                        }
                    }
                }
            }
        }
    }
}