@dc4life78: "I have been dealing with an annoying problem with Microsoft Excel where, out 
of the blue, the palette colors will change to different colors.  I use 
worksheets with a lot of highlighting, and often times the new colors will be 
so dark that I cannot see the text.  The only remedy is to change the colors 
to something else or (what I usually do) close Excel completely and restart 
the program.  Does anyone know of a way to stop this, or at least an 
explanation for why this even happens in the first place?
Thank you!"
    @ufopilot: "You may try TOOLS>OPTIONS>COLORS
There you have some options.
You can import another (opened) workbooks color pallete
<quote>"
    @dc4life78: "I have already tried modifying the colors, resetting to default, importing 
from other workbooks; nothing works.  The color schemes simply change without 
warning; for example, forest green turns into dark green (basically black) 
and light orange becomes light grey.
<quote>"
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