I know of no way to do it in the table itself, but you can
do it in the form that displays the particular field. If
you open a table and try to change the color of one column
(field) the color of all the fields changes.
Tables are NOT designed for data display or presentation, and should
be used only for debugging. Instead, create a Form based on your
table; you can set the colors and other properties of the Controls
(textboxes and others) in your Form very flexibly.