Change color of WP embed title

Hello

I would like to change the color of the following class and can't figure out how. In other cases this works flawless, however, not here:

.wp-embed-heading a {
    color: #32373c;
}

My goal is to have a red title in this case.
How do I do that?

I have tried changing the color, marking it as important, no luck so far...

Thanks a lot
Michael