just using Firefox only... Set the color to always use your own colors, then change accordingly whomever you want to take interest to, will pops up in 'Visited

just using Firefox only... Set the color to always use your own colors, then change accordingly whomever you want to take interest to, will pops up in 'Visited Link' color, the rest just normal URL obviously works best in less-hyperlink sites like HN, wikipedia quite tolerable YMMV :D