How to customize the Customer Display screen to change the line-level color

How to customize the Customer Display screen to change the line-level color

Version

6.5 Update 6

Issue

The requirement is to customize the "Customer Display" screen, customer wants to change the line-level color, currently it is showing Yellow but he wants a different color. Below is the screenshot for the same:
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Response

These fields are not customizable so can't change the selected row color by customization option of the "Customer display" screen. This is product by design.
 
This KB article concludes here.