Filter – grouping colours /styles

Hi,

I am working on a replacement site for a friend. I would like to be able to add a filter on shop pages for both colours and styles (trousers/smart…)

The range in the Colours attribute is huge, as many of the items come in different shades of blue, or grey… So I would like to be able to group them and the user simply filter on “Blue”. My knowledge is limited, but I managed to add a Colour range attribute – but I can’t assign it to different variations without it appearing on the product page. I had also hoped to hand this over to my friend to maintain once it is done, and he is even less technical. Is there any easy way to achieve it?

Similarly, I also want users to be able to filter out based on style (trouser or smart/casual…). Historically the site has categorised according to brand. I can add extra categories and tag them accordingly. But when I added the filter by category option I got all the brands too. Is there any easier way of doing this too?

Many thanks
Nicky

The page I need help with: [log in to see the link]