Inverting color of sound icon on tabs which are playing audio.

[clockwinder]

How do I invert the color of the sound icon on tabs which are playing audio.

The speaker icon is currently black, and hard to see against the dark background. Please let me know if I need to provide additional info!

[irvinm]

.sound-button {
    filter: invert();
}

[clockwinder]

The screenshot I posted is using:

/* Hide sound playing/muted button. */
.sound-button::before {
    display: none !important;
}

[irvinm]

Ok ... so:

.sound-button::before {
    display: none !important;
}

.sound-button {
    filter: invert();
}

Shows me this:

[clockwinder]

You're absolutely right! Sorry, I didn't understand that we could invert a hidden element. (I still don't understand, if you care to explain)

Thanks! :)