Hi, Billy.
Sure; to change it permantently in design view, click on the checkbox, show
properties with View, Properties (or right-click/Properties). Click the
Format tab, and change the BackColor property.
To do it based on a value it takes on you can use Format, Conditional
Formatting. To change it based on another control's value, or combination of
other values, or in response to some event, the VBA code is:
YourComboBox.BackColor = YourColorValue
Hope that helps.
Sprinke