Even if you look closely at this screenshot, you will never understand the point.

And the point is that I was able to change the colors of the texts! It was very difficult.

I already told about the fact that the developers of the site, in some styles use "!important". This is a modifier that blocks the ability to further edit the style. But the developers, most likely do not even know about this parasite in their code.

And now the question:

How do you modify a CSS style with "!important"? You can use JS.

Answer:

var styleElement = document.createElement("style");
styleElement.innerHTML = "h3 a:hover { color: #fff !important; }";
document.head.appendChild(styleElement);

Answer 2:

Make the developers furaffinity *bonk*