Apply format rule to "Field Name/Display Name" rather than field "value"

Remembering I placed feature quest to resize the text of fields names in detail view (generally and currently it is too small), but this feature request should cover it and also get more flexiblilty to control the fields name on detail view.

Simply apply the format rule to fields name conditionally.
Currently, the format rule is only applied to the field “value”, but what I want to get is to apply “optionally” to the display name of fields.

@morgan
@carie

By doing it, can control the size of the text, and apply the diffferent color, bold, italic etc to stand out the field name more as we want.