Conditional Formatting - the Text Box

I have no trouble formatting the font and background for a Text Box depending upon some other value.

But I do not seem to be able to format the font and background when I disable a Text Box using the Conditional Formatting Rules Manager?

When I click the “disable” button in the Conditional Formatting Rules Manager, the Text Box is disabled but it has a white background. And the text of the associated Label turns to gray?

Is there anyway I can define the text and background when I disable a Text Box using the Rules Manager?

Thanks.