How to change color of radzendatagrid advanced filter icon when using custom filter template

[PhilippeBaillargeon]

I have a custom filter template component that looks like this:

And I use it like this:

But, as you can see in the image below, when the filter is applied, the icon color stay the same color.

How can change the icon color of the filter so we can see if there is a filter applied?

[enchev]

This icon will be be active if FilterValue is assigned.