It's not possible.
You could employ Conditional Formatting in a form in Datasheet view, and use
that as a subform to simulate a list box with multiple colours, but that's
about it with the controls available in Access.
There might be 3rd party tools that can do it, but I'm afraid I don't know
of any.
--
Doug Steele, Microsoft Access MVP
http://I.Am/DougSteele
(no private e-mails, please)
"JustinP" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Is it possible to color some of the values in a combo box one color
> based on a criteria and others another color?
>
> To be more specific about what I want to do:
>
> Color all the records in the combo box that are redundant, red (i.e.
> If Me![Redundant] = Yes)
>