I want to change the color of this, I have searched everywhere but can not find what value to put in the custom.css

I did find this, but this is from the feed itself.

.newsfeed .medium  {
   font-size: 30px;
   color: #ffffff;
   line-height: 60px;
}

Can someone tell me what to adjust to give it a different color

Thanks! Groetjes :)