Opencart SEO URL for product filters

Hiya

I recently started to build an estore on Opencart and I am trying to implement seo friendly URLs in my project but I am stuck with friendly & SEO URLs for product filters, for now they apper like this: http://www.mywebsite.co.uk/shop/bathroom&filter=6,3,8 but I would like http://www.mywebsite.co.uk/shop/bathroo ... uare,black
This would give a more friendly approach and better search engine rankings.

Can it be done, please?
Thanx in advance ;o)

Filters should not show up in search engines as they are generated by the user during his session only. As far as I know, there are no actual links generated that a search engine could read.