There is command like alerter.

In the properties of the table in which you are displaying
data look for "Alternate rows" and change the color to "Red"

i have a report with n number of records. if u want to take
alternative color. go for alerter --> give the condition if
u want the 0,2,4-- wise  select the condition 

=even(linenumber);

if u want to 1,3,5--wise 

select the condition  =odd(linenumber)

The above formula will take a separate variable.