How to update the Section background color in PDF forms to use in Onboarding task

Content

Hello Team,

I wanted to change the background color of one section(enclosed in yellow box), basically i wanted to change that red color to some other color and use this form in Onboarding task of a process.

How to update the background on one section, I am using Adobe Acrobat Editor pro to edit the same. if anyone created this kind of form please help me with you expert advice.

Thank you,

Satya