Combo Box Question - Access 2007

[Jeff Garrison]

Here's an off the wall question...

I'm runnin Access 2007. On a form, I have a few Combo boxes. On 2 of them,
if I tab through them, they change from the normal backgroud (white, which
is how I set them up) to the backs being transparent. I've gone through all
of the Events, but there's nothing that would cause them to change the back
color.

Any ideas?

Thanks

JeffG