Highlight Rows of Duplicate results column with unique coloring

Hello,
I have searched and tried various Macros but none are working for me - appreciate your help.

My spreadsheet is A1:G1289 with Row 1 being header.
Column F contains duplicate part numbers

Objective: Identify duplicate values in column F (Any value in column F that is equal to another value in column F) and highlight those ROWS (groupings) with unique coloring.
This spreadsheet will continue to grow so would like the maximum color spectrum available.

Thanks in advance.
Glen

Excel 2013