You probably have a custom color scheme with that one sheet, to restore to
default follow these steps:

<Tools
<Options
"Color" tab
Click "Reset"

--
Regards,
Dave


"Caroline" wrote:

This only happens on one spreadsheet I use - the colors are fine on other
spreadsheets. But Tan and God are missing from my color scheme and have been
replaced by two unnamed colours of grey and green. This is weird. I used the
Tan colour to highlight cells in this spreadsheet previously and now its
gone... don't want to reinstall - its just a problem with one sheet