I have changed put a number of new links into my site including breadcrumb trails. I have edited the link colours to blue and dark blue, with visited links showing no colour. However, when I visit the site, all the links I have clicked on revert back to the common website link colours, my main problem being that visited links show up in bright purple. This jars with the colour scheme of the whole site. Am I missing something or is this a problem with the program?

site is www.bloomsburycleaning.co.uk