Changing the color of text inside an ion-tab

I have. I don’t see it. Maybe I’m looking at the wrong page, or the wrong part of the page? Or perhaps I’m just misunderstanding what I’m looking at. I’'ve been reading a lot of documentation, so it’s totally possible I missed it. I don’t see anything about selected text color here: ion-tab-button: Ionic Framework API Docs, or here: Item Label Color and Properties for Applications | ion-label