Instead of colouring the rows, you can use conditional formatting. Chip
Pearson has instructions:

http://www.cpearson.com/excel/banding.htm

Wendy wrote:
I have a chart that alternates colors for every row. How can I save the
template for this worksheet so that the colors don't leave their rows when I
sort the data?


--
Debra Dalgleish
Excel FAQ, Tips & Book List
http://www.contextures.com/tiptech.html