Harsinchh asks if there is a way to highlight all formula cells and the precedents of those formulas. There are a lot of techniques discussed in this video:
Show Formulas in Excel
Select all Formulas in Excel
Go To Special Precedents in Excel
Direct versus All Precedents in Excel
VBA to select formulas in Excel
VBA to select precedents in Excel
VBA to union two ranges in Excel

Table of Contents
(0:00) Excel: Select Formulas & the precedents
(0:25) Excel Show Formulas
(0:55) Selecting all Excel Formulas
(1:16) Selecting Formula Precedents with Go To Special
(1:40) All Precedents versus Direct Precedents
(2:52) Four-step is a kludge
(3:08) VBA Macro to select formulas and precedents
(4:49) Personal Macro Workbook