Change color black to pop ups

hi,
I was wondering where and how can I change the black of the pop ups or messages. see the images

thanks!!!

You can use this custom CSS:

.joms-popup__title {
    background-color: #000 !important;
}

and change #000 to your desired color.

saguaros thahks, whats the file name?

You can put into file: /templates/socialize/css/custom.css (Create this file if it doesn't exist now)

Thaks!!!