[Issue] Using custom PHP function {echo:function} inside background-color with WPGridBuilder facets


I’m using a custom PHP function to return the hexcode of an ACF color picker inside a custom taxonomy:

The problem is that I’m using WPGridBuilder facets too, to filters on those custom taxonomies, and I don’t know how to call again this PHP function to get the value again as a background-color.
When I click on those WPGridBuilder facets all my loop items are changing and I don’t have the background-color anymore…

Any idea on how to get the value of my ACF hexcode when using WPGridBuilder facets?