Google Spreadsheets: Alternating Background Color on Value Change?

Question

there are lots of topics about Conditional Formatting in Google Spreadsheets, but not one like what I\'m looking for.

All I want to do is set an alt

Answer 1

I Added an additional column with the following formula: =IF($A2=$A1,$D1,$D1+1)

A2 since I have a header row D since this is the additional column

than conditional formatting on with the following formula: =isEven($D1)