I should probably have posted here in the first place:

Have been doing financial presentations with lots of charts (ie line graphs,
bar and column charts, pies, scatter plots, etc.) using PowerPoint 2007,
which creates an Excel file for each chart. I need to convert them for use
in 2003 as not everyone has 2007. After saving down as 97-2003, the charts
look OK in 2003 BUT when I double-click to edit them some of the colours
change. I've tried using non-theme colours and that seems to work MOST OF
THE
TIME but NOT ALWAYS. When the colours do change I don't even have the option
to change the default Excel colours in the embedded workbook.

There's 100s of charts! Help please...

Many thanks...