Configure Style for field does not work for choice valuesIssue Configure Style for field does not work for choice values.CauseThis is the expected behavior in the form views. It is mentioned in the following in documentation.https://docs.servicenow.com/csh?topicname=t_DefineFieldStyles.html&version=latest?title=Defining_Field_StylesIt is mentioned in the documentation - "Note: The value only affects list field styles. To apply field styles on both lists and forms, leave this field blank." When the value is left blank, the color is changed.ResolutionIf you need to change the background styles based on the value, you will need to write a client script. You can refer to the following article which describes how to write it.https://community.servicenow.com/community?id=community_question&sys_id=fda30f65dbd8dbc01dcaf3231f96199f