I want to create a color facet grouping similar colors. That is, instead of displaying several checkboxes for light blue, dark blue, whatever blue... all those colors should be grouped into a single checkbox "Blue".
I tried creating a field of type "Grouping" in the index repository, but only numeric product fields are enabled to be grouped (e.g. From 100 to 200).
How could be possible to do it?
If it is not possible, then the options with almost no products should be removed from the facet options. In this case I think the best way to do it is modifying the facet template, isn't it?