Change default field background color- on form in display record mode

Apologies - your code works as stated. However it only works if you have section headings on the forms set as: 'to the left of fields' and not 'above fields'.

This was really frustrating me and took a long time to figure out why it wasn't working as I have almost all forms set to above fields.

Any advice on how to get it working on both types of section headings would be great, but this is still a big improvement from the standard view form with they grey backgrounds so many thanks yet again!