It's really not a complex task with a macro. Try the following two macros:

Sub CustomHighlightOne()
Selection.Range.HighlightColorIndex = wdYellow
End Sub

Sub CustomHighlightTwo()
Selection.Range.HighlightColorIndex = wdBlue
End Sub

Of course, you'd have to change the values for HighlightColorIndex to suit your needs.

See http://www.gmayor.com/installing_macro.htm for assistance with installing macros.

__________________
Stefan Blom
Microsoft Word MVP

Microsoft 365 apps for business
Windows 11 Professional