How do I change the background color inside these text frames?

[MarieMeyer]

How do I change the background color inside these text frames? I thought there would be a fill available in the appearance panel, but there isn't.

[SJRiegel]

If you are talking about the pale pink that is showing in your screen shot, that is not a printable color, it's an indication that the font selected for the text is missing.

[Scott Falkner]

Use the Direct Select tool (white arrow) to select the frame edge then change the fill in the Appearance panel, Color panel, or Swatches panel.

[karent38118276]

This was extremely helpful - thank you! Nothing else was working for me.