microsoft excel - How to highlight multiple rows based on column cell numbers?

I'd like to automatically highlight multiple rows based on the group of numbers in one column. So I would have a different row color for each unique family ID. Is there a way to do this without manually having to select a color in conditional formating? I have 400 families and 1000+ rows. Thanks for the help guys.

Example data:

FamilyID  Stock Number     Class
1922      1361427          Box
1922      5859184          Box
1922      1422784          Box
1922      1422694          Box
2196      1336358          Circle
2196      1336244          Circle
2196      675239           Circle
2205      57813            Square
2205      863453           Square
2220      30664            Square
2220      1336732          Square
2220      22874            Square