I'm trying to achieve what is outlined in this forum post:
(Bascially, I have a grid with the "Bootstrap" theme - and when a filter is applied the filter icon has a slightly greyer background than the rest of the header, however it is difficult to see).
The issue i'm having is that only the filter icon's background changes, (see Example 1.png) - not the whole header. I'd like the whole header to change. I also have attached a copy of the view, can anyone assist?