Is it possible to set background color inside Text Box in RDLC Report?

Question

I need a yellow highlight on parts of text in a generated word document. Highlighted words are meant to be changed by user after report generation. This is pretty common use case in my opinion. Changing font color is not a good option, because it's not clearly visible on printed document.

In the Visual studio RDLC disainer Background Color button is disabled inside the Text box and on Placeholders. I tried adding manually Background attributes to Style section of TextRun in RDLC. This doesn't work. The only option I found is to break text into separate Text Boxes and set background on the whole text box. But that is a very inconvenient option for developer. And even more inconvenient for end user, because the text is generated in separate tables what makes it a hell to change.

Is there a way or workaround to do this?