I finally found out what works: and it does not affect the index text color.
I'm settling for just coloring the XE (two letters - not the whole entry). I
knew it had to be possible:
With the SHOW button on (to show the XE entries in the main document)
Edit > Find what: XE
Options: Search all, Match Case, Format >Font: Times New Roman, Regular, 12,
Font color: auto
Replace with XE >Format > Font > Times New Roman, Regular, 12, Font Color:
RED > OK > Replace All
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For newbies:
If you are working with Arial font (or other) besides Times New Roman, take
that into consideration.
............................................
Thanks Daiya, for at least another alternate to try. Yes, it is not to see
what I've indexed, though that is helpful, but I use a second window which
shows the actual index entries since this is a long document and with two
windows open, the main text is smaller than I like to work with. My screen
is a good size, but my vision needs just a little help