Excel retaining old cell fill colors?

If you are using a laser printer, it may not have sufficient memory to handle all the graphics. Having looked at some new colour laser printers, some of the specifications mention memory specs and others don't. I have had some pretty strange results (though years ago) because of this.

If this is being printed on an inkjet printer I suspect that there is some kind of corruption in the graphics area. Can you copy the graphics (one at a time and not the whole worksheet) to a new workbook then copy and paste values and formulae where applicable then apply cell formatting as required?

If you are using tables and are manually formatting them, it can be difficult to get rid of old formatting when reformatting the table. (I have just gone through this) The solution to getting rid of the old formatting was to select the entire columns affected and then click on Clear Formats and start over.

Good luck.