visited link color on the website

[nurp]

On the website arduino.cc, the visited links still appear teal. Is it possible to change the css behaviour, so that visited links appear in a different color?
this is the page I am looking: https://www.arduino.cc/en/Tutorial/Foundations

[kengdahl]

This will be suggested a change to the webpage.

[SConaway]

Where would the CSS be located? Is it editable? I'll edit it if I know what to edit.