How to change the field background color after data is entered in the text field for Adobe Acrobat DC?

[moswarthy]

How to change the field background color after date is entered in the text field for Acrobat Adobe DC?

I would like the background color to be changed to yellow when text in entered into the field.

Thank you.

[try67]

Use this code as the field's custom Validation script:

event.target.fillColor = (event.value=="") ? color.white : color.yellow;

[moswarthy]

Thank you very much!