.toolbar-icon-rcf-admin-radio-1:before, 
.toolbar-icon-rcf-admin-radio-2:before, 
.toolbar-icon-rcf-admin-radio-3:before, 
.toolbar-icon-rcf-admin-radio-4:before, 
.toolbar-icon-rcf-admin-radio-5:before {
    background-image: url(../img/microphone-lines-solid.svg);
    filter: invert(95%) sepia(0%) saturate(0%) hue-rotate(135deg) brightness(87%) contrast(92%);
}
.toolbar-icon-rcf-admin-radio-1:active:before, .toolbar-icon-rcf-admin-radio-1.is-active:before,
.toolbar-icon-rcf-admin-radio-2:active:before, .toolbar-icon-rcf-admin-radio-2.is-active:before,
.toolbar-icon-rcf-admin-radio-3:active:before, .toolbar-icon-rcf-admin-radio-3.is-active:before,
.toolbar-icon-rcf-admin-radio-4:active:before, .toolbar-icon-rcf-admin-radio-4.is-active:before,
.toolbar-icon-rcf-admin-radio-5:active:before, .toolbar-icon-rcf-admin-radio-5.is-active:before {
    background-image: url(../img/microphone-lines-solid.svg);
    filter: invert(95%) sepia(0%) saturate(0%) hue-rotate(135deg) brightness(87%) contrast(92%);
}

.toolbar .toolbar-bar .toolbar-icon.toolbar-icon-rcf-admin-radio-1:before,
.toolbar .toolbar-bar .toolbar-icon.toolbar-icon-rcf-admin-radio-2:before,
.toolbar .toolbar-bar .toolbar-icon.toolbar-icon-rcf-admin-radio-3:before,
.toolbar .toolbar-bar .toolbar-icon.toolbar-icon-rcf-admin-radio-4:before,
.toolbar .toolbar-bar .toolbar-icon.toolbar-icon-rcf-admin-radio-5:before
{
    -webkit-mask-image: url(../img/microphone-lines-solid.svg);
    mask-image: url(../img/microphone-lines-solid.svg);
}