In the bottom navigation bar I want to change the button ActiveColor when I get true from service but the problem is I can't override button color with CSS it doesn't apply(nativescript angular)

<MDBottomNavigation....>


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<Image src="/api/flow.js?q=https%3A%2F%2Fgithub.com%2FNativeScript%2Fnativescript-angular%2Fissues%2Ffont..." [ngClass]="actionsActive?'first-color':'second-color'">
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