Change the color of a word or phrase related to a link

Hi! I need to resolve a doubt with Minamaze.
When within an article, I add a linked to a word or phrase link, stays in gray, and I want to be more highlighted and can be seen in other color: black, for example.

How I can change this color through CSS style? What is the section of the programming that refers to this color?

Thanks in advance, greetings.