Question : How change background color of a text box based on date criteria

I have a form and on the form I have a text box.  I want the background color of this text box to be red if the current date is later than a date in a separate text box.  And also I want the background color of the text box to be green if today's date is equal to the date in the separate text box.

Can this be done?

Answer : How change background color of a text box based on date criteria

then add another condition
expression is [otherbox] is null
select the color black