I touched on a link on the main site and it became darker. But I found it very similar to plain text. Some eyes really feel them the same.
In fact, the color of plain text is #0B0D0F and for the visited links it is #3E0E0E.
Being underlined doesn't necessarily mean the word(s) are links. This is obviously a link (in the picture), but it could have been just a single word.