So you have a slide like this with an imported Excel table:
And you need to adjust the colors of the excel chart to coordinate with the presentation template. You double-click the table and get the image format box, not the Excel data:
But all is not lost! Some information is still there. On the PICTURE tab, click the RECOLOR button to access this “secret” data.
In the RECOLOR PICTURE dialog you can see the original colors formatted in Excel and have the ability to change to any other color in a few easy clicks.
This is an invaluable tool within PowerPoint to know of and use when faced with pasted in Excel tables.
-Troy @ TLC