Making Hyperlinks Change To Purple When You've Visited ANY Page On That Domain Before



Not as easy as you're thinking. There's no "visited link anywhere on this domain" CSS attribute.

Best way would be cookie to let you know they're a returning visitor, and a PHP script that puts all "a" tags to a certain color depending if that cookie exists or not. Not exactly a "nice" solution, but it'll work.
 
It's not possible to change the color of links on your site, based on what OTHER sites someone has visited. It was for a while in older browsers, but that security hole was patched a year or two ago.

If you want to change only related to the current domain, as above, use a cookie.
 
Do you mean in Google search results?

I use FF and the links turn purple without me doing anything (besides visiting the URL sometime in the past obviously..) in G results. But only the exact URL/page of the site that i have visited and not all pages from that site..
 
You're talking client-side; haven't searched, but there might be a firefox plugin that does this.
 
You're talking client-side; haven't searched, but there might be a firefox plugin that does this.

Yup, sorry as I said I should've been clearer in the OP. I did look for a FF plugin but couldn't find one.

Basically I only want to hit link targets once per domain, I know I can do a pull with scrapebox and then remove duplicates but this isn't ideal for a number of reasons that I can't go into right now.